Home / 438,961.57-658,442.35-123,418.47

Finding the Fourth Proportional to 438,961.57, 658,442.35 and 123,418.47

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Solution

The fourth proportional to 438,961.57, 658,442.35 and 123,418.47 is: 185,127.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,961.57 : 658,442.35 = 123,418.47 : x
  2. Step 2: Convert to fraction form
    438,961.57/658,442.35 = 123,418.47/x
  3. Step 3: Cross multiply
    438,961.57x = 658,442.35 × 123,418.47
  4. Step 4: Simplify right side
    438,961.57x = 81,263,948,757.76
  5. Step 5: Solve for x
    x = 81,263,948,757.76/438,961.57
  6. Step 6: Final answer
    x = 185,127.71

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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.