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Finding the Fourth Proportional to 487,677.52, 672,724.02 and 283,705.48

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Solution

The fourth proportional to 487,677.52, 672,724.02 and 283,705.48 is: 391,355.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    487,677.52 : 672,724.02 = 283,705.48 : x
  2. Step 2: Convert to fraction form
    487,677.52/672,724.02 = 283,705.48/x
  3. Step 3: Cross multiply
    487,677.52x = 672,724.02 × 283,705.48
  4. Step 4: Simplify right side
    487,677.52x = 190,855,491,001.63
  5. Step 5: Solve for x
    x = 190,855,491,001.63/487,677.52
  6. Step 6: Final answer
    x = 391,355.93

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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.