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Finding the Fourth Proportional to 656,673.12, 984,517.20 and 278,037.60

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Solution

The fourth proportional to 656,673.12, 984,517.20 and 278,037.60 is: 416,847.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,673.12 : 984,517.20 = 278,037.60 : x
  2. Step 2: Convert to fraction form
    656,673.12/984,517.20 = 278,037.60/x
  3. Step 3: Cross multiply
    656,673.12x = 984,517.20 × 278,037.60
  4. Step 4: Simplify right side
    656,673.12x = 273,732,799,446.72
  5. Step 5: Solve for x
    x = 273,732,799,446.72/656,673.12
  6. Step 6: Final answer
    x = 416,847.88

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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.