Home / 2,189,752.28-3,021,419.83-1,222,733.78

Finding the Fourth Proportional to 2,189,752.28, 3,021,419.83 and 1,222,733.78

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Solution

The fourth proportional to 2,189,752.28, 3,021,419.83 and 1,222,733.78 is: 1,687,127.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,189,752.28 : 3,021,419.83 = 1,222,733.78 : x
  2. Step 2: Convert to fraction form
    2,189,752.28/3,021,419.83 = 1,222,733.78/x
  3. Step 3: Cross multiply
    2,189,752.28x = 3,021,419.83 × 1,222,733.78
  4. Step 4: Simplify right side
    2,189,752.28x = 3,694,392,068,482.09
  5. Step 5: Solve for x
    x = 3,694,392,068,482.09/2,189,752.28
  6. Step 6: Final answer
    x = 1,687,127.86

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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.