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Finding the Fourth Proportional to 486,168.20, 727,502.70 and 328,704.20

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Solution

The fourth proportional to 486,168.20, 727,502.70 and 328,704.20 is: 491,873.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,168.20 : 727,502.70 = 328,704.20 : x
  2. Step 2: Convert to fraction form
    486,168.20/727,502.70 = 328,704.20/x
  3. Step 3: Cross multiply
    486,168.20x = 727,502.70 × 328,704.20
  4. Step 4: Simplify right side
    486,168.20x = 239,133,193,001.34
  5. Step 5: Solve for x
    x = 239,133,193,001.34/486,168.20
  6. Step 6: Final answer
    x = 491,873.37

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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.