Home / 2,120,378.45-3,180,553.08-858,187.85

Finding the Fourth Proportional to 2,120,378.45, 3,180,553.08 and 858,187.85

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Solution

The fourth proportional to 2,120,378.45, 3,180,553.08 and 858,187.85 is: 1,287,275.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,378.45 : 3,180,553.08 = 858,187.85 : x
  2. Step 2: Convert to fraction form
    2,120,378.45/3,180,553.08 = 858,187.85/x
  3. Step 3: Cross multiply
    2,120,378.45x = 3,180,553.08 × 858,187.85
  4. Step 4: Simplify right side
    2,120,378.45x = 2,729,512,009,536.08
  5. Step 5: Solve for x
    x = 2,729,512,009,536.08/2,120,378.45
  6. Step 6: Final answer
    x = 1,287,275.87

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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.