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Finding the Fourth Proportional to 542,028.72, 747,989.92 and 300,306.44

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Solution

The fourth proportional to 542,028.72, 747,989.92 and 300,306.44 is: 414,417.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,028.72 : 747,989.92 = 300,306.44 : x
  2. Step 2: Convert to fraction form
    542,028.72/747,989.92 = 300,306.44/x
  3. Step 3: Cross multiply
    542,028.72x = 747,989.92 × 300,306.44
  4. Step 4: Simplify right side
    542,028.72x = 224,626,190,031.09
  5. Step 5: Solve for x
    x = 224,626,190,031.09/542,028.72
  6. Step 6: Final answer
    x = 414,417.51

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1.5x scale

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.