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Finding the Fourth Proportional to 625,471.20, 938,472.48 and 309,934.08

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Solution

The fourth proportional to 625,471.20, 938,472.48 and 309,934.08 is: 465,032.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,471.20 : 938,472.48 = 309,934.08 : x
  2. Step 2: Convert to fraction form
    625,471.20/938,472.48 = 309,934.08/x
  3. Step 3: Cross multiply
    625,471.20x = 938,472.48 × 309,934.08
  4. Step 4: Simplify right side
    625,471.20x = 290,864,604,694.12
  5. Step 5: Solve for x
    x = 290,864,604,694.12/625,471.20
  6. Step 6: Final answer
    x = 465,032.77

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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.