510.45 is what percent of 619 - 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 619 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 619, so we can write it down as 100%=619.
4. We know, that x% equals 510.45 of the output value, so we can write it down as x%=510.45.
5. Now we have two simple equations:
1) 100%=619
2) x%=510.45
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%=619/510.45
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for 510.45 is what percent of 619

100%/x%=619/510.45
(100/x)*x=(619/510.45)*x       - we multiply both sides of the equation by x
100=1.212655500049*x       - we divide both sides of the equation by (1.212655500049) to get x
100/1.212655500049=x
82.463651050081=x
x=82.463651050081

now we have:
510.45 is 82.463651050081% of 619