Step 1:
The first step to converting 509957.7853405 to a fraction is to re-write 509957.7853405 in the form p/q where p and q are both positive integers. To start with, 509957.7853405 can be written as simply 509957.7853405/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 509957.7853405, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 509957.7853405/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 509957.7853405/1 each by 10000000:
Step 3:
Now the last step is to simplify the fraction (if possible) by finding similar factors and cancelling them out, which leads to the following answer for 509957.7853405 as a fraction:
509958/1 / 1