Home / 2,187,890.76-3,019,593.60-1,221,083.36

Finding the Fourth Proportional to 2,187,890.76, 3,019,593.60 and 1,221,083.36

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Solution

The fourth proportional to 2,187,890.76, 3,019,593.60 and 1,221,083.36 is: 1,685,264.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187,890.76 : 3,019,593.60 = 1,221,083.36 : x
  2. Step 2: Convert to fraction form
    2,187,890.76/3,019,593.60 = 1,221,083.36/x
  3. Step 3: Cross multiply
    2,187,890.76x = 3,019,593.60 × 1,221,083.36
  4. Step 4: Simplify right side
    2,187,890.76x = 3,687,175,498,922.50
  5. Step 5: Solve for x
    x = 3,687,175,498,922.50/2,187,890.76
  6. Step 6: Final answer
    x = 1,685,264.90

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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.