Home / 2,115,930.31-3,172,895.08-819,689.84

Finding the Fourth Proportional to 2,115,930.31, 3,172,895.08 and 819,689.84

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Solution

The fourth proportional to 2,115,930.31, 3,172,895.08 and 819,689.84 is: 1,229,147.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,930.31 : 3,172,895.08 = 819,689.84 : x
  2. Step 2: Convert to fraction form
    2,115,930.31/3,172,895.08 = 819,689.84/x
  3. Step 3: Cross multiply
    2,115,930.31x = 3,172,895.08 × 819,689.84
  4. Step 4: Simplify right side
    2,115,930.31x = 2,600,789,856,363.54
  5. Step 5: Solve for x
    x = 2,600,789,856,363.54/2,115,930.31
  6. Step 6: Final answer
    x = 1,229,147.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.