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Finding the Fourth Proportional to 437,528.40, 656,292.60 and 408,003.90

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Solution

The fourth proportional to 437,528.40, 656,292.60 and 408,003.90 is: 612,005.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,528.40 : 656,292.60 = 408,003.90 : x
  2. Step 2: Convert to fraction form
    437,528.40/656,292.60 = 408,003.90/x
  3. Step 3: Cross multiply
    437,528.40x = 656,292.60 × 408,003.90
  4. Step 4: Simplify right side
    437,528.40x = 267,769,940,341.14
  5. Step 5: Solve for x
    x = 267,769,940,341.14/437,528.40
  6. Step 6: Final answer
    x = 612,005.85

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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.