Finding the Fourth Proportional to 5,420,961,711.90, 8,129,720,691.72 and 1,739,606,131.98
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Solution
The fourth proportional to 5,420,961,711.90, 8,129,720,691.72 and 1,739,606,131.98 is: 2,608,856,641.72
Step by Step Solution
- Step 1: Write the proportion equation
5,420,961,711.90 : 8,129,720,691.72 = 1,739,606,131.98 : x - Step 2: Convert to fraction form
5,420,961,711.90/8,129,720,691.72 = 1,739,606,131.98/x - Step 3: Cross multiply
5,420,961,711.90x = 8,129,720,691.72 × 1,739,606,131.98 - Step 4: Simplify right side
5,420,961,711.90x = 14,142,511,966,600,800,256 - Step 5: Solve for x
x = 14,142,511,966,600,800,256/5,420,961,711.90 - Step 6: Final answer
x = 2,608,856,641.72
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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.