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Finding the Fourth Proportional to 629,768.60, 869,037.22 and 354,167.64

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Solution

The fourth proportional to 629,768.60, 869,037.22 and 354,167.64 is: 488,726.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,768.60 : 869,037.22 = 354,167.64 : x
  2. Step 2: Convert to fraction form
    629,768.60/869,037.22 = 354,167.64/x
  3. Step 3: Cross multiply
    629,768.60x = 869,037.22 × 354,167.64
  4. Step 4: Simplify right side
    629,768.60x = 307,784,855,163.54
  5. Step 5: Solve for x
    x = 307,784,855,163.54/629,768.60
  6. Step 6: Final answer
    x = 488,726.90

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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.