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Finding the Fourth Proportional to 496,979.60, 745,469.40 and 418,247.60

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Solution

The fourth proportional to 496,979.60, 745,469.40 and 418,247.60 is: 627,371.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,979.60 : 745,469.40 = 418,247.60 : x
  2. Step 2: Convert to fraction form
    496,979.60/745,469.40 = 418,247.60/x
  3. Step 3: Cross multiply
    496,979.60x = 745,469.40 × 418,247.60
  4. Step 4: Simplify right side
    496,979.60x = 311,790,787,423.44
  5. Step 5: Solve for x
    x = 311,790,787,423.44/496,979.60
  6. Step 6: Final answer
    x = 627,371.40

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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.