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Finding the Fourth Proportional to 412,230.60, 618,345.90 and 329,286.60

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Solution

The fourth proportional to 412,230.60, 618,345.90 and 329,286.60 is: 493,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,230.60 : 618,345.90 = 329,286.60 : x
  2. Step 2: Convert to fraction form
    412,230.60/618,345.90 = 329,286.60/x
  3. Step 3: Cross multiply
    412,230.60x = 618,345.90 × 329,286.60
  4. Step 4: Simplify right side
    412,230.60x = 203,613,019,034.94
  5. Step 5: Solve for x
    x = 203,613,019,034.94/412,230.60
  6. Step 6: Final answer
    x = 493,929.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.