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Finding the Fourth Proportional to 542,149.60, 747,724.56 and 381,536.80

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Solution

The fourth proportional to 542,149.60, 747,724.56 and 381,536.80 is: 526,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,149.60 : 747,724.56 = 381,536.80 : x
  2. Step 2: Convert to fraction form
    542,149.60/747,724.56 = 381,536.80/x
  3. Step 3: Cross multiply
    542,149.60x = 747,724.56 × 381,536.80
  4. Step 4: Simplify right side
    542,149.60x = 285,284,435,903.81
  5. Step 5: Solve for x
    x = 285,284,435,903.81/542,149.60
  6. Step 6: Final answer
    x = 526,209.81

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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.