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Finding the Fourth Proportional to 629,773.68, 869,044.26 and 354,172.74

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Solution

The fourth proportional to 629,773.68, 869,044.26 and 354,172.74 is: 488,733.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,773.68 : 869,044.26 = 354,172.74 : x
  2. Step 2: Convert to fraction form
    629,773.68/869,044.26 = 354,172.74/x
  3. Step 3: Cross multiply
    629,773.68x = 869,044.26 × 354,172.74
  4. Step 4: Simplify right side
    629,773.68x = 307,791,786,745.47
  5. Step 5: Solve for x
    x = 307,791,786,745.47/629,773.68
  6. Step 6: Final answer
    x = 488,733.96

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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.