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Finding the Fourth Proportional to 483,115.52, 721,419.96 and 394,544.72

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Solution

The fourth proportional to 483,115.52, 721,419.96 and 394,544.72 is: 589,160.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,115.52 : 721,419.96 = 394,544.72 : x
  2. Step 2: Convert to fraction form
    483,115.52/721,419.96 = 394,544.72/x
  3. Step 3: Cross multiply
    483,115.52x = 721,419.96 × 394,544.72
  4. Step 4: Simplify right side
    483,115.52x = 284,632,436,120.61
  5. Step 5: Solve for x
    x = 284,632,436,120.61/483,115.52
  6. Step 6: Final answer
    x = 589,160.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.