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Finding the Fourth Proportional to 491,979.40, 737,969.10 and 482,648.20

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Solution

The fourth proportional to 491,979.40, 737,969.10 and 482,648.20 is: 723,972.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    491,979.40 : 737,969.10 = 482,648.20 : x
  2. Step 2: Convert to fraction form
    491,979.40/737,969.10 = 482,648.20/x
  3. Step 3: Cross multiply
    491,979.40x = 737,969.10 × 482,648.20
  4. Step 4: Simplify right side
    491,979.40x = 356,179,457,770.62
  5. Step 5: Solve for x
    x = 356,179,457,770.62/491,979.40
  6. Step 6: Final answer
    x = 723,972.30

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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.