519.5 is what percent of 609 - step by step solution

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 609 is 100% - because it's the output value of the task.
2. We assume, that x is the value we are looking for.
3. If 100% equals 609, so we can write it down as 100%=609.
4. We know, that x% equals 519.5 of the output value, so we can write it down as x%=519.5.
5. Now we have two simple equations:
1) 100%=609
2) x%=519.5
where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:
100%/x%=609/519.5
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 519.5 is what percent of 609

100%/x%=609/519.5
(100/x)*x=(609/519.5)*x       - we multiply both sides of the equation by x
100=1.172281039461*x       - we divide both sides of the equation by (1.172281039461) to get x
100/1.172281039461=x
85.303776683087=x
x=85.303776683087

now we have:
519.5 is 85.303776683087% of 609