Home / 598,638.20-897,957.30-431,332.70

Finding the Fourth Proportional to 598,638.20, 897,957.30 and 431,332.70

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Solution

The fourth proportional to 598,638.20, 897,957.30 and 431,332.70 is: 646,999.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    598,638.20 : 897,957.30 = 431,332.70 : x
  2. Step 2: Convert to fraction form
    598,638.20/897,957.30 = 431,332.70/x
  3. Step 3: Cross multiply
    598,638.20x = 897,957.30 × 431,332.70
  4. Step 4: Simplify right side
    598,638.20x = 387,318,346,693.71
  5. Step 5: Solve for x
    x = 387,318,346,693.71/598,638.20
  6. Step 6: Final answer
    x = 646,999.05

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Double scale
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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.