Step 1:
The first step to converting 630603.9869778 to a fraction is to re-write 630603.9869778 in the form p/q where p and q are both positive integers. To start with, 630603.9869778 can be written as simply 630603.9869778/1 to technically be written as a fraction.
Step 2:
Next, we will count the number of fractional digits after the decimal point in 630603.9869778, which in this case is 7. For however many digits after the decimal point there are, we will multiply the numerator and denominator of 630603.9869778/1 each by 10 to the power of that many digits. So, in this case, we will multiply the numerator and denominator of 630603.9869778/1 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 630603.9869778 as a fraction:
630604/1 / 1