Finding the Fourth Proportional to 542,642,211.78, 748,846,620.99 and 304,454,515.02
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Solution
The fourth proportional to 542,642,211.78, 748,846,620.99 and 304,454,515.02 is: 420,147,437.61
Step by Step Solution
- Step 1: Write the proportion equation
542,642,211.78 : 748,846,620.99 = 304,454,515.02 : x - Step 2: Convert to fraction form
542,642,211.78/748,846,620.99 = 304,454,515.02/x - Step 3: Cross multiply
542,642,211.78x = 748,846,620.99 × 304,454,515.02 - Step 4: Simplify right side
542,642,211.78x = 227,989,734,817,876,192 - Step 5: Solve for x
x = 227,989,734,817,876,192/542,642,211.78 - Step 6: Final answer
x = 420,147,437.61
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.