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Finding the Fourth Proportional to 684,359.88, 944,422.76 and 378,456.85

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Solution

The fourth proportional to 684,359.88, 944,422.76 and 378,456.85 is: 522,273.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,359.88 : 944,422.76 = 378,456.85 : x
  2. Step 2: Convert to fraction form
    684,359.88/944,422.76 = 378,456.85/x
  3. Step 3: Cross multiply
    684,359.88x = 944,422.76 × 378,456.85
  4. Step 4: Simplify right side
    684,359.88x = 357,423,260,560.53
  5. Step 5: Solve for x
    x = 357,423,260,560.53/684,359.88
  6. Step 6: Final answer
    x = 522,273.83

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Double scale
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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.