Home / 2,156,991.38-2,976,645.86-1,190,121.58

Finding the Fourth Proportional to 2,156,991.38, 2,976,645.86 and 1,190,121.58

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Solution

The fourth proportional to 2,156,991.38, 2,976,645.86 and 1,190,121.58 is: 1,642,366.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156,991.38 : 2,976,645.86 = 1,190,121.58 : x
  2. Step 2: Convert to fraction form
    2,156,991.38/2,976,645.86 = 1,190,121.58/x
  3. Step 3: Cross multiply
    2,156,991.38x = 2,976,645.86 × 1,190,121.58
  4. Step 4: Simplify right side
    2,156,991.38x = 3,542,570,474,003.66
  5. Step 5: Solve for x
    x = 3,542,570,474,003.66/2,156,991.38
  6. Step 6: Final answer
    x = 1,642,366.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.