Finding the Fourth Proportional to 1,327,841,837.60, 1,990,419,063.60 and 782,302,560.80
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Solution
The fourth proportional to 1,327,841,837.60, 1,990,419,063.60 and 782,302,560.80 is: 1,172,662,199.99
Step by Step Solution
- Step 1: Write the proportion equation
1,327,841,837.60 : 1,990,419,063.60 = 782,302,560.80 : x - Step 2: Convert to fraction form
1,327,841,837.60/1,990,419,063.60 = 782,302,560.80/x - Step 3: Cross multiply
1,327,841,837.60x = 1,990,419,063.60 × 782,302,560.80 - Step 4: Simplify right side
1,327,841,837.60x = 1,557,109,930,519,417,856 - Step 5: Solve for x
x = 1,557,109,930,519,417,856/1,327,841,837.60 - Step 6: Final answer
x = 1,172,662,199.99
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.