Home / 998,086.60-1,497,129.90-399,140.20

Finding the Fourth Proportional to 998,086.60, 1,497,129.90 and 399,140.20

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Solution

The fourth proportional to 998,086.60, 1,497,129.90 and 399,140.20 is: 598,710.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    998,086.60 : 1,497,129.90 = 399,140.20 : x
  2. Step 2: Convert to fraction form
    998,086.60/1,497,129.90 = 399,140.20/x
  3. Step 3: Cross multiply
    998,086.60x = 1,497,129.90 × 399,140.20
  4. Step 4: Simplify right side
    998,086.60x = 597,564,727,711.98
  5. Step 5: Solve for x
    x = 597,564,727,711.98/998,086.60
  6. Step 6: Final answer
    x = 598,710.30

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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.