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Finding the Fourth Proportional to 542,707.16, 748,247.60 and 387,843.42

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Solution

The fourth proportional to 542,707.16, 748,247.60 and 387,843.42 is: 534,732.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,707.16 : 748,247.60 = 387,843.42 : x
  2. Step 2: Convert to fraction form
    542,707.16/748,247.60 = 387,843.42/x
  3. Step 3: Cross multiply
    542,707.16x = 748,247.60 × 387,843.42
  4. Step 4: Simplify right side
    542,707.16x = 290,202,908,190.79
  5. Step 5: Solve for x
    x = 290,202,908,190.79/542,707.16
  6. Step 6: Final answer
    x = 534,732.04

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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.