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Finding the Fourth Proportional to 629,751.78, 869,024.68 and 357,781.93

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Solution

The fourth proportional to 629,751.78, 869,024.68 and 357,781.93 is: 493,720.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,751.78 : 869,024.68 = 357,781.93 : x
  2. Step 2: Convert to fraction form
    629,751.78/869,024.68 = 357,781.93/x
  3. Step 3: Cross multiply
    629,751.78x = 869,024.68 × 357,781.93
  4. Step 4: Simplify right side
    629,751.78x = 310,921,325,439.12
  5. Step 5: Solve for x
    x = 310,921,325,439.12/629,751.78
  6. Step 6: Final answer
    x = 493,720.44

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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.