Detailed calculations and explanations, below
A common ordinary fraction is made up of
two integer numbers and a fraction bar:
247,916,666,722/349,999,999,990
- The integer number above the bar is called numerator: 247,916,666,722
- The integer number below the bar is called denominator: 349,999,999,990
- The fraction bar means that the numerator is divided by the denominator.
- To get the fraction's value divide the numerator by the denominator:
The value = 247,916,666,722 ÷ 349,999,999,990
To reduce a fraction to the lowest terms equivalent: divide the numerator and denominator by their greatest common factor, GCF
To calculate the greatest common factor, GCF:
- 1. Factor the numerator and the denominator (into prime factors), build their prime factorizations.
- 2. Multiply all their common prime factors, taken by the lowest exponents.
1. Factor the numerator and the denominator:
To factor a number (into prime factors) - or, in other words, to break it down to prime factors - or, in other words, to build its prime factorization: find the prime numbers that multiply together to get that number.
The prime factorizations:
247,916,666,722 = 2 × 137 × 904,805,353
247,916,666,722 is a composite number.
349,999,999,990 = 2 × 5 × 34,999,999,999
349,999,999,990 is a composite number.
247,916,666,722/349,999,999,990 =
(247,916,666,722 ÷ 2) / (349,999,999,990 ÷ 2) =
123,958,333,361/174,999,999,995
Yet another method to reduce the fraction
To reduce a fraction without calculating the GCF: factor its numerator and denominator, then all the common prime factors are easily identified and crossed out.
247,916,666,722/349,999,999,990 =
(2 × 137 × 904,805,353)/(2 × 5 × 34,999,999,999) =
((2 × 137 × 904,805,353) ÷ 2) / ((2 × 5 × 34,999,999,999) ÷ 2) =
(137 × 904,805,353)/(5 × 34,999,999,999) =
123,958,333,361/174,999,999,995
As a decimal number:
Simply divide the numerator by the denominator, without a remainder, as shown below:
123,958,333,361/174,999,999,995 =
123,958,333,361 ÷ 174,999,999,995 =
0.708333333512 ≈
0.71