Home / 1,189,452.89-1,641,446.79-645,588.88

Finding the Fourth Proportional to 1,189,452.89, 1,641,446.79 and 645,588.88

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Solution

The fourth proportional to 1,189,452.89, 1,641,446.79 and 645,588.88 is: 890,913.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,452.89 : 1,641,446.79 = 645,588.88 : x
  2. Step 2: Convert to fraction form
    1,189,452.89/1,641,446.79 = 645,588.88/x
  3. Step 3: Cross multiply
    1,189,452.89x = 1,641,446.79 × 645,588.88
  4. Step 4: Simplify right side
    1,189,452.89x = 1,059,699,794,735.70
  5. Step 5: Solve for x
    x = 1,059,699,794,735.70/1,189,452.89
  6. Step 6: Final answer
    x = 890,913.63

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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.