Home / 1,231,120.28-1,686,626.92-1,185,082.09

Finding the Fourth Proportional to 1,231,120.28, 1,686,626.92 and 1,185,082.09

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Solution

The fourth proportional to 1,231,120.28, 1,686,626.92 and 1,185,082.09 is: 1,623,554.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,120.28 : 1,686,626.92 = 1,185,082.09 : x
  2. Step 2: Convert to fraction form
    1,231,120.28/1,686,626.92 = 1,185,082.09/x
  3. Step 3: Cross multiply
    1,231,120.28x = 1,686,626.92 × 1,185,082.09
  4. Step 4: Simplify right side
    1,231,120.28x = 1,998,791,364,655.74
  5. Step 5: Solve for x
    x = 1,998,791,364,655.74/1,231,120.28
  6. Step 6: Final answer
    x = 1,623,554.90

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.