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Finding the Fourth Proportional to 437,530.40, 656,295.60 and 408,005.90

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Solution

The fourth proportional to 437,530.40, 656,295.60 and 408,005.90 is: 612,008.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    437,530.40 : 656,295.60 = 408,005.90 : x
  2. Step 2: Convert to fraction form
    437,530.40/656,295.60 = 408,005.90/x
  3. Step 3: Cross multiply
    437,530.40x = 656,295.60 × 408,005.90
  4. Step 4: Simplify right side
    437,530.40x = 267,772,476,944.04
  5. Step 5: Solve for x
    x = 267,772,476,944.04/437,530.40
  6. Step 6: Final answer
    x = 612,008.85

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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.