Home / 2,168,489.80-3,250,401.90-820,131.40

Finding the Fourth Proportional to 2,168,489.80, 3,250,401.90 and 820,131.40

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Solution

The fourth proportional to 2,168,489.80, 3,250,401.90 and 820,131.40 is: 1,229,314.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,168,489.80 : 3,250,401.90 = 820,131.40 : x
  2. Step 2: Convert to fraction form
    2,168,489.80/3,250,401.90 = 820,131.40/x
  3. Step 3: Cross multiply
    2,168,489.80x = 3,250,401.90 × 820,131.40
  4. Step 4: Simplify right side
    2,168,489.80x = 2,665,756,660,809.66
  5. Step 5: Solve for x
    x = 2,665,756,660,809.66/2,168,489.80
  6. Step 6: Final answer
    x = 1,229,314.83

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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.