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Finding the Fourth Proportional to 479,073.68, 660,515.12 and 315,704.78

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Solution

The fourth proportional to 479,073.68, 660,515.12 and 315,704.78 is: 435,272.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,073.68 : 660,515.12 = 315,704.78 : x
  2. Step 2: Convert to fraction form
    479,073.68/660,515.12 = 315,704.78/x
  3. Step 3: Cross multiply
    479,073.68x = 660,515.12 × 315,704.78
  4. Step 4: Simplify right side
    479,073.68x = 208,527,780,646.27
  5. Step 5: Solve for x
    x = 208,527,780,646.27/479,073.68
  6. Step 6: Final answer
    x = 435,272.88

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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.