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Finding the Fourth Proportional to 425,545.26, 637,520.85 and 381,727.50

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Solution

The fourth proportional to 425,545.26, 637,520.85 and 381,727.50 is: 571,876.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,545.26 : 637,520.85 = 381,727.50 : x
  2. Step 2: Convert to fraction form
    425,545.26/637,520.85 = 381,727.50/x
  3. Step 3: Cross multiply
    425,545.26x = 637,520.85 × 381,727.50
  4. Step 4: Simplify right side
    425,545.26x = 243,359,240,268.38
  5. Step 5: Solve for x
    x = 243,359,240,268.38/425,545.26
  6. Step 6: Final answer
    x = 571,876.28

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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.