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Finding the Fourth Proportional to 598,639.20, 897,958.80 and 431,333.70

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Solution

The fourth proportional to 598,639.20, 897,958.80 and 431,333.70 is: 647,000.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,639.20 : 897,958.80 = 431,333.70 : x
  2. Step 2: Convert to fraction form
    598,639.20/897,958.80 = 431,333.70/x
  3. Step 3: Cross multiply
    598,639.20x = 897,958.80 × 431,333.70
  4. Step 4: Simplify right side
    598,639.20x = 387,319,891,651.56
  5. Step 5: Solve for x
    x = 387,319,891,651.56/598,639.20
  6. Step 6: Final answer
    x = 647,000.55

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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.