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Finding the Fourth Proportional to 664,469.20, 916,648.68 and 482,899.60

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Solution

The fourth proportional to 664,469.20, 916,648.68 and 482,899.60 is: 666,169.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,469.20 : 916,648.68 = 482,899.60 : x
  2. Step 2: Convert to fraction form
    664,469.20/916,648.68 = 482,899.60/x
  3. Step 3: Cross multiply
    664,469.20x = 916,648.68 × 482,899.60
  4. Step 4: Simplify right side
    664,469.20x = 442,649,280,912.53
  5. Step 5: Solve for x
    x = 442,649,280,912.53/664,469.20
  6. Step 6: Final answer
    x = 666,169.75

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.