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Finding the Fourth Proportional to 684,624.12, 944,708.61 and 378,651.87

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Solution

The fourth proportional to 684,624.12, 944,708.61 and 378,651.87 is: 522,499.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,624.12 : 944,708.61 = 378,651.87 : x
  2. Step 2: Convert to fraction form
    684,624.12/944,708.61 = 378,651.87/x
  3. Step 3: Cross multiply
    684,624.12x = 944,708.61 × 378,651.87
  4. Step 4: Simplify right side
    684,624.12x = 357,715,681,781.60
  5. Step 5: Solve for x
    x = 357,715,681,781.60/684,624.12
  6. Step 6: Final answer
    x = 522,499.39

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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.