Finding the Fourth Proportional to 3,838,376.77, 5,755,639.86 and 1,278,691.79
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Solution
The fourth proportional to 3,838,376.77, 5,755,639.86 and 1,278,691.79 is: 1,917,396.30
Step by Step Solution
- Step 1: Write the proportion equation
3,838,376.77 : 5,755,639.86 = 1,278,691.79 : x - Step 2: Convert to fraction form
3,838,376.77/5,755,639.86 = 1,278,691.79/x - Step 3: Cross multiply
3,838,376.77x = 5,755,639.86 × 1,278,691.79 - Step 4: Simplify right side
3,838,376.77x = 7,359,689,406,400.55 - Step 5: Solve for x
x = 7,359,689,406,400.55/3,838,376.77 - Step 6: Final answer
x = 1,917,396.30
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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.