What is 0.5 percent of 639.395 - 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 639.395 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 639.395 is 100%, so we can write it down as 639.395=100%.
4. We know, that x is 0.5% of the output value, so we can write it down as x=0.5%.
5. Now we have two simple equations:
1) 639.395=100%
2) x=0.5%
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:
639.395/x=100%/0.5%
6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 0.5% of 639.395

639.395/x=100/0.5
(639.395/x)*x=(100/0.5)*x       - we multiply both sides of the equation by x
639.395=200*x       - we divide both sides of the equation by (200) to get x
639.395/200=x
3.196975=x
x=3.196975

now we have:
0.5% of 639.395=3.196975