Step 1:
The first step to converting 509676.9 to a fraction is to re-write 509676.9 in the form p/q where p and q are both positive integers. To start with, 509676.9 can be written as simply 509676.9/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 509676.9, which in this case is 1. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 509676.9/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 509676.9/1 each by 10:
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 509676.9 as a fraction:
509677/1 / 1