Home / 2,120,209.92-3,179,640.96-700,001.28

Finding the Fourth Proportional to 2,120,209.92, 3,179,640.96 and 700,001.28

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Solution

The fourth proportional to 2,120,209.92, 3,179,640.96 and 700,001.28 is: 1,049,779.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,209.92 : 3,179,640.96 = 700,001.28 : x
  2. Step 2: Convert to fraction form
    2,120,209.92/3,179,640.96 = 700,001.28/x
  3. Step 3: Cross multiply
    2,120,209.92x = 3,179,640.96 × 700,001.28
  4. Step 4: Simplify right side
    2,120,209.92x = 2,225,752,741,940.43
  5. Step 5: Solve for x
    x = 2,225,752,741,940.43/2,120,209.92
  6. Step 6: Final answer
    x = 1,049,779.42

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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.