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Finding the Fourth Proportional to 486,572.80, 729,859.20 and 459,016.60

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Solution

The fourth proportional to 486,572.80, 729,859.20 and 459,016.60 is: 688,524.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    486,572.80 : 729,859.20 = 459,016.60 : x
  2. Step 2: Convert to fraction form
    486,572.80/729,859.20 = 459,016.60/x
  3. Step 3: Cross multiply
    486,572.80x = 729,859.20 × 459,016.60
  4. Step 4: Simplify right side
    486,572.80x = 335,017,488,462.72
  5. Step 5: Solve for x
    x = 335,017,488,462.72/486,572.80
  6. Step 6: Final answer
    x = 688,524.90

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Similar ratio
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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.