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Finding the Fourth Proportional to 858,494.40, 1,286,704.80 and 437,553.60

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Solution

The fourth proportional to 858,494.40, 1,286,704.80 and 437,553.60 is: 655,801.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,494.40 : 1,286,704.80 = 437,553.60 : x
  2. Step 2: Convert to fraction form
    858,494.40/1,286,704.80 = 437,553.60/x
  3. Step 3: Cross multiply
    858,494.40x = 1,286,704.80 × 437,553.60
  4. Step 4: Simplify right side
    858,494.40x = 563,002,317,377.28
  5. Step 5: Solve for x
    x = 563,002,317,377.28/858,494.40
  6. Step 6: Final answer
    x = 655,801.97

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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.