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Finding the Fourth Proportional to 442,892.40, 664,338.60 and 411,399.60

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Solution

The fourth proportional to 442,892.40, 664,338.60 and 411,399.60 is: 617,099.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,892.40 : 664,338.60 = 411,399.60 : x
  2. Step 2: Convert to fraction form
    442,892.40/664,338.60 = 411,399.60/x
  3. Step 3: Cross multiply
    442,892.40x = 664,338.60 × 411,399.60
  4. Step 4: Simplify right side
    442,892.40x = 273,308,634,304.56
  5. Step 5: Solve for x
    x = 273,308,634,304.56/442,892.40
  6. Step 6: Final answer
    x = 617,099.40

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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.