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Finding the Fourth Proportional to 665,425.80, 998,138.70 and 244,614.60

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Solution

The fourth proportional to 665,425.80, 998,138.70 and 244,614.60 is: 366,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,425.80 : 998,138.70 = 244,614.60 : x
  2. Step 2: Convert to fraction form
    665,425.80/998,138.70 = 244,614.60/x
  3. Step 3: Cross multiply
    665,425.80x = 998,138.70 × 244,614.60
  4. Step 4: Simplify right side
    665,425.80x = 244,159,298,845.02
  5. Step 5: Solve for x
    x = 244,159,298,845.02/665,425.80
  6. Step 6: Final answer
    x = 366,921.90

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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.