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Finding the Fourth Proportional to 529,189.62, 730,286.73 and 287,474.01

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Solution

The fourth proportional to 529,189.62, 730,286.73 and 287,474.01 is: 396,716.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,189.62 : 730,286.73 = 287,474.01 : x
  2. Step 2: Convert to fraction form
    529,189.62/730,286.73 = 287,474.01/x
  3. Step 3: Cross multiply
    529,189.62x = 730,286.73 × 287,474.01
  4. Step 4: Simplify right side
    529,189.62x = 209,938,454,722.89
  5. Step 5: Solve for x
    x = 209,938,454,722.89/529,189.62
  6. Step 6: Final answer
    x = 396,716.88

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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.