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Finding the Fourth Proportional to 443,608.40, 664,246.20 and 324,635.60

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Solution

The fourth proportional to 443,608.40, 664,246.20 and 324,635.60 is: 486,099.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,608.40 : 664,246.20 = 324,635.60 : x
  2. Step 2: Convert to fraction form
    443,608.40/664,246.20 = 324,635.60/x
  3. Step 3: Cross multiply
    443,608.40x = 664,246.20 × 324,635.60
  4. Step 4: Simplify right side
    443,608.40x = 215,637,963,684.72
  5. Step 5: Solve for x
    x = 215,637,963,684.72/443,608.40
  6. Step 6: Final answer
    x = 486,099.82

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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.