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Finding the Fourth Proportional to 724,324.22, 999,691.22 and 418,345.61

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Solution

The fourth proportional to 724,324.22, 999,691.22 and 418,345.61 is: 577,388.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    724,324.22 : 999,691.22 = 418,345.61 : x
  2. Step 2: Convert to fraction form
    724,324.22/999,691.22 = 418,345.61/x
  3. Step 3: Cross multiply
    724,324.22x = 999,691.22 × 418,345.61
  4. Step 4: Simplify right side
    724,324.22x = 418,216,432,560.02
  5. Step 5: Solve for x
    x = 418,216,432,560.02/724,324.22
  6. Step 6: Final answer
    x = 577,388.44

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1.5x scale

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.