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Finding the Fourth Proportional to 649,469.70, 974,204.55 and 425,520.90

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Solution

The fourth proportional to 649,469.70, 974,204.55 and 425,520.90 is: 638,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    649,469.70 : 974,204.55 = 425,520.90 : x
  2. Step 2: Convert to fraction form
    649,469.70/974,204.55 = 425,520.90/x
  3. Step 3: Cross multiply
    649,469.70x = 974,204.55 × 425,520.90
  4. Step 4: Simplify right side
    649,469.70x = 414,544,396,900.10
  5. Step 5: Solve for x
    x = 414,544,396,900.10/649,469.70
  6. Step 6: Final answer
    x = 638,281.35

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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.