Home / 2,120,378.20-3,180,552.71-858,187.60

Finding the Fourth Proportional to 2,120,378.20, 3,180,552.71 and 858,187.60

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Solution

The fourth proportional to 2,120,378.20, 3,180,552.71 and 858,187.60 is: 1,287,275.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120,378.20 : 3,180,552.71 = 858,187.60 : x
  2. Step 2: Convert to fraction form
    2,120,378.20/3,180,552.71 = 858,187.60/x
  3. Step 3: Cross multiply
    2,120,378.20x = 3,180,552.71 × 858,187.60
  4. Step 4: Simplify right side
    2,120,378.20x = 2,729,510,892,577.46
  5. Step 5: Solve for x
    x = 2,729,510,892,577.46/2,120,378.20
  6. Step 6: Final answer
    x = 1,287,275.49

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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.