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Finding the Fourth Proportional to 655,046.92, 980,536.38 and 354,781.72

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Solution

The fourth proportional to 655,046.92, 980,536.38 and 354,781.72 is: 531,070.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,046.92 : 980,536.38 = 354,781.72 : x
  2. Step 2: Convert to fraction form
    655,046.92/980,536.38 = 354,781.72/x
  3. Step 3: Cross multiply
    655,046.92x = 980,536.38 × 354,781.72
  4. Step 4: Simplify right side
    655,046.92x = 347,876,383,418.97
  5. Step 5: Solve for x
    x = 347,876,383,418.97/655,046.92
  6. Step 6: Final answer
    x = 531,070.94

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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.