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Finding the Fourth Proportional to 655,238.68, 904,079.82 and 368,654.20

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Solution

The fourth proportional to 655,238.68, 904,079.82 and 368,654.20 is: 508,658.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,238.68 : 904,079.82 = 368,654.20 : x
  2. Step 2: Convert to fraction form
    655,238.68/904,079.82 = 368,654.20/x
  3. Step 3: Cross multiply
    655,238.68x = 904,079.82 × 368,654.20
  4. Step 4: Simplify right side
    655,238.68x = 333,292,822,778.24
  5. Step 5: Solve for x
    x = 333,292,822,778.24/655,238.68
  6. Step 6: Final answer
    x = 508,658.65

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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.