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Finding the Fourth Proportional to 489,377.52, 674,951.40 and 404,346.96

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Solution

The fourth proportional to 489,377.52, 674,951.40 and 404,346.96 is: 557,676.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,377.52 : 674,951.40 = 404,346.96 : x
  2. Step 2: Convert to fraction form
    489,377.52/674,951.40 = 404,346.96/x
  3. Step 3: Cross multiply
    489,377.52x = 674,951.40 × 404,346.96
  4. Step 4: Simplify right side
    489,377.52x = 272,914,546,737.74
  5. Step 5: Solve for x
    x = 272,914,546,737.74/489,377.52
  6. Step 6: Final answer
    x = 557,676.92

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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.