Home / 1,396,361.44-1,928,115.12-1,138,278.88

Finding the Fourth Proportional to 1,396,361.44, 1,928,115.12 and 1,138,278.88

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Solution

The fourth proportional to 1,396,361.44, 1,928,115.12 and 1,138,278.88 is: 1,571,751.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,396,361.44 : 1,928,115.12 = 1,138,278.88 : x
  2. Step 2: Convert to fraction form
    1,396,361.44/1,928,115.12 = 1,138,278.88/x
  3. Step 3: Cross multiply
    1,396,361.44x = 1,928,115.12 × 1,138,278.88
  4. Step 4: Simplify right side
    1,396,361.44x = 2,194,732,719,304.67
  5. Step 5: Solve for x
    x = 2,194,732,719,304.67/1,396,361.44
  6. Step 6: Final answer
    x = 1,571,751.16

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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.