Finding the Fourth Proportional to 425,719,251.20, 638,578,876.80 and 323,682,579.20
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Solution
The fourth proportional to 425,719,251.20, 638,578,876.80 and 323,682,579.20 is: 485,523,868.80
Step by Step Solution
- Step 1: Write the proportion equation
425,719,251.20 : 638,578,876.80 = 323,682,579.20 : x - Step 2: Convert to fraction form
425,719,251.20/638,578,876.80 = 323,682,579.20/x - Step 3: Cross multiply
425,719,251.20x = 638,578,876.80 × 323,682,579.20 - Step 4: Simplify right side
425,719,251.20x = 206,696,857,865,263,008 - Step 5: Solve for x
x = 206,696,857,865,263,008/425,719,251.20 - Step 6: Final answer
x = 485,523,868.80
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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.