Home / 2,121,909.12-2,928,271.92-1,155,067.20

Finding the Fourth Proportional to 2,121,909.12, 2,928,271.92 and 1,155,067.20

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Solution

The fourth proportional to 2,121,909.12, 2,928,271.92 and 1,155,067.20 is: 1,594,013.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,909.12 : 2,928,271.92 = 1,155,067.20 : x
  2. Step 2: Convert to fraction form
    2,121,909.12/2,928,271.92 = 1,155,067.20/x
  3. Step 3: Cross multiply
    2,121,909.12x = 2,928,271.92 × 1,155,067.20
  4. Step 4: Simplify right side
    2,121,909.12x = 3,382,350,847,473.02
  5. Step 5: Solve for x
    x = 3,382,350,847,473.02/2,121,909.12
  6. Step 6: Final answer
    x = 1,594,013.06

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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.