Home / 2,189,675.20-3,021,577.68-1,222,747.60

Finding the Fourth Proportional to 2,189,675.20, 3,021,577.68 and 1,222,747.60

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Solution

The fourth proportional to 2,189,675.20, 3,021,577.68 and 1,222,747.60 is: 1,687,294.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,675.20 : 3,021,577.68 = 1,222,747.60 : x
  2. Step 2: Convert to fraction form
    2,189,675.20/3,021,577.68 = 1,222,747.60/x
  3. Step 3: Cross multiply
    2,189,675.20x = 3,021,577.68 × 1,222,747.60
  4. Step 4: Simplify right side
    2,189,675.20x = 3,694,626,856,433.57
  5. Step 5: Solve for x
    x = 3,694,626,856,433.57/2,189,675.20
  6. Step 6: Final answer
    x = 1,687,294.47

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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.