Home / 1,189,311.19-1,641,250.30-645,446.83

Finding the Fourth Proportional to 1,189,311.19, 1,641,250.30 and 645,446.83

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Solution

The fourth proportional to 1,189,311.19, 1,641,250.30 and 645,446.83 is: 890,717.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,311.19 : 1,641,250.30 = 645,446.83 : x
  2. Step 2: Convert to fraction form
    1,189,311.19/1,641,250.30 = 645,446.83/x
  3. Step 3: Cross multiply
    1,189,311.19x = 1,641,250.30 × 645,446.83
  4. Step 4: Simplify right side
    1,189,311.19x = 1,059,339,805,093.17
  5. Step 5: Solve for x
    x = 1,059,339,805,093.17/1,189,311.19
  6. Step 6: Final answer
    x = 890,717.09

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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.