Home / 2,143,121.22-3,212,446.23-722,689.02

Finding the Fourth Proportional to 2,143,121.22, 3,212,446.23 and 722,689.02

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Solution

The fourth proportional to 2,143,121.22, 3,212,446.23 and 722,689.02 is: 1,083,279.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143,121.22 : 3,212,446.23 = 722,689.02 : x
  2. Step 2: Convert to fraction form
    2,143,121.22/3,212,446.23 = 722,689.02/x
  3. Step 3: Cross multiply
    2,143,121.22x = 3,212,446.23 × 722,689.02
  4. Step 4: Simplify right side
    2,143,121.22x = 2,321,599,617,761.39
  5. Step 5: Solve for x
    x = 2,321,599,617,761.39/2,143,121.22
  6. Step 6: Final answer
    x = 1,083,279.66

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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.