Finding the Fourth Proportional to 527,705,812.67, 727,931,462.88 and 329,122,543.05
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Solution
The fourth proportional to 527,705,812.67, 727,931,462.88 and 329,122,543.05 is: 454,000,407.95
Step by Step Solution
- Step 1: Write the proportion equation
527,705,812.67 : 727,931,462.88 = 329,122,543.05 : x - Step 2: Convert to fraction form
527,705,812.67/727,931,462.88 = 329,122,543.05/x - Step 3: Cross multiply
527,705,812.67x = 727,931,462.88 × 329,122,543.05 - Step 4: Simplify right side
527,705,812.67x = 239,578,654,229,172,288 - Step 5: Solve for x
x = 239,578,654,229,172,288/527,705,812.67 - Step 6: Final answer
x = 454,000,407.95
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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.