If 360 is 2/3 of the full price on a saw then your equation should look like this:
[tex]360=\frac{2}{3} *x[/tex]
x is your unknown full price of the saw. Just solve for x now.
[tex]360=\frac{2}{3} *x\\ \\ x=\frac{3}{2} *360=540[/tex]
This means that the full price is $540.
Hope this helps!