Home / 890,997.60-1,336,496.40-491,432.70

Finding the Fourth Proportional to 890,997.60, 1,336,496.40 and 491,432.70

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Solution

The fourth proportional to 890,997.60, 1,336,496.40 and 491,432.70 is: 737,149.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,997.60 : 1,336,496.40 = 491,432.70 : x
  2. Step 2: Convert to fraction form
    890,997.60/1,336,496.40 = 491,432.70/x
  3. Step 3: Cross multiply
    890,997.60x = 1,336,496.40 × 491,432.70
  4. Step 4: Simplify right side
    890,997.60x = 656,798,034,392.28
  5. Step 5: Solve for x
    x = 656,798,034,392.28/890,997.60
  6. Step 6: Final answer
    x = 737,149.05

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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.