Home / 840,154.20-1,260,231.30-479,955.30

Finding the Fourth Proportional to 840,154.20, 1,260,231.30 and 479,955.30

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Solution

The fourth proportional to 840,154.20, 1,260,231.30 and 479,955.30 is: 719,932.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,154.20 : 1,260,231.30 = 479,955.30 : x
  2. Step 2: Convert to fraction form
    840,154.20/1,260,231.30 = 479,955.30/x
  3. Step 3: Cross multiply
    840,154.20x = 1,260,231.30 × 479,955.30
  4. Step 4: Simplify right side
    840,154.20x = 604,854,691,660.89
  5. Step 5: Solve for x
    x = 604,854,691,660.89/840,154.20
  6. Step 6: Final answer
    x = 719,932.95

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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.