Home / 1,189,236.12-1,641,146.88-645,371.88

Finding the Fourth Proportional to 1,189,236.12, 1,641,146.88 and 645,371.88

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Solution

The fourth proportional to 1,189,236.12, 1,641,146.88 and 645,371.88 is: 890,613.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,236.12 : 1,641,146.88 = 645,371.88 : x
  2. Step 2: Convert to fraction form
    1,189,236.12/1,641,146.88 = 645,371.88/x
  3. Step 3: Cross multiply
    1,189,236.12x = 1,641,146.88 × 645,371.88
  4. Step 4: Simplify right side
    1,189,236.12x = 1,059,150,047,301.73
  5. Step 5: Solve for x
    x = 1,059,150,047,301.73/1,189,236.12
  6. Step 6: Final answer
    x = 890,613.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.