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Finding the Fourth Proportional to 529,486.38, 730,691.22 and 287,769.54

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Solution

The fourth proportional to 529,486.38, 730,691.22 and 287,769.54 is: 397,121.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,486.38 : 730,691.22 = 287,769.54 : x
  2. Step 2: Convert to fraction form
    529,486.38/730,691.22 = 287,769.54/x
  3. Step 3: Cross multiply
    529,486.38x = 730,691.22 × 287,769.54
  4. Step 4: Simplify right side
    529,486.38x = 210,270,676,261.44
  5. Step 5: Solve for x
    x = 210,270,676,261.44/529,486.38
  6. Step 6: Final answer
    x = 397,121.97

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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.