To find the percentage increase in the population from 2015 to 2050, we will follow these steps:
1. Determine the initial population in 2015.
2. Determine the projected population in 2050.
3. Calculate the increase in population by subtracting the initial population from the projected population.
4. Calculate the percentage increase by dividing the increase in population by the initial population and then multiplying the result by 100.
5. Round the result to the nearest whole number.
Now let's proceed with these steps using the figures given in the question.
1. The initial population in 2015 is 321 million people.
2. The projected population in 2050 is 438 million people.
3. Calculate the increase in population:
Increase = Projected population in 2050 - Initial population in 2015
Increase = 438 million - 321 million
Increase = 117 million people
4. Calculate the percentage increase in population:
Percentage Increase = (Increase / Initial population) * 100
Percentage Increase = (117 million / 321 million) * 100
To make the calculation easier, we can cancel out "million" in the numerator and denominator before multiplying by 100.
Percentage Increase = (117 / 321) * 100
Now we perform the division and then the multiplication:
Percentage Increase ≈ 0.364486 * 100
Percentage Increase ≈ 36.4486 %
5. Round the result to the nearest whole number:
The rounded Percentage Increase = 36 %
Therefore, if projections are true, the US population will increase by about 36% from 2015 to 2050.
