Home / 2,121,879.12-2,928,190.14-1,155,006.42

Finding the Fourth Proportional to 2,121,879.12, 2,928,190.14 and 1,155,006.42

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Solution

The fourth proportional to 2,121,879.12, 2,928,190.14 and 1,155,006.42 is: 1,593,907.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121,879.12 : 2,928,190.14 = 1,155,006.42 : x
  2. Step 2: Convert to fraction form
    2,121,879.12/2,928,190.14 = 1,155,006.42/x
  3. Step 3: Cross multiply
    2,121,879.12x = 2,928,190.14 × 1,155,006.42
  4. Step 4: Simplify right side
    2,121,879.12x = 3,382,078,410,680.70
  5. Step 5: Solve for x
    x = 3,382,078,410,680.70/2,121,879.12
  6. Step 6: Final answer
    x = 1,593,907.20

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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.