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Finding the Fourth Proportional to 443,132.40, 664,698.60 and 398,895.60

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Solution

The fourth proportional to 443,132.40, 664,698.60 and 398,895.60 is: 598,343.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,132.40 : 664,698.60 = 398,895.60 : x
  2. Step 2: Convert to fraction form
    443,132.40/664,698.60 = 398,895.60/x
  3. Step 3: Cross multiply
    443,132.40x = 664,698.60 × 398,895.60
  4. Step 4: Simplify right side
    443,132.40x = 265,145,346,866.16
  5. Step 5: Solve for x
    x = 265,145,346,866.16/443,132.40
  6. Step 6: Final answer
    x = 598,343.40

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Similar ratio
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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.