Home / 1,245,305.40-1,867,958.10-1,123,270.80

Finding the Fourth Proportional to 1,245,305.40, 1,867,958.10 and 1,123,270.80

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Solution

The fourth proportional to 1,245,305.40, 1,867,958.10 and 1,123,270.80 is: 1,684,906.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245,305.40 : 1,867,958.10 = 1,123,270.80 : x
  2. Step 2: Convert to fraction form
    1,245,305.40/1,867,958.10 = 1,123,270.80/x
  3. Step 3: Cross multiply
    1,245,305.40x = 1,867,958.10 × 1,123,270.80
  4. Step 4: Simplify right side
    1,245,305.40x = 2,098,222,789,353.48
  5. Step 5: Solve for x
    x = 2,098,222,789,353.48/1,245,305.40
  6. Step 6: Final answer
    x = 1,684,906.20

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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.