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Finding the Fourth Proportional to 748,908.60, 1,123,362.90 and 243,468.60

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Solution

The fourth proportional to 748,908.60, 1,123,362.90 and 243,468.60 is: 365,202.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    748,908.60 : 1,123,362.90 = 243,468.60 : x
  2. Step 2: Convert to fraction form
    748,908.60/1,123,362.90 = 243,468.60/x
  3. Step 3: Cross multiply
    748,908.60x = 1,123,362.90 × 243,468.60
  4. Step 4: Simplify right side
    748,908.60x = 273,503,592,554.94
  5. Step 5: Solve for x
    x = 273,503,592,554.94/748,908.60
  6. Step 6: Final answer
    x = 365,202.90

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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.