Home / 2,128,273.52-2,936,776.92-1,223,147.12

Finding the Fourth Proportional to 2,128,273.52, 2,936,776.92 and 1,223,147.12

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Solution

The fourth proportional to 2,128,273.52, 2,936,776.92 and 1,223,147.12 is: 1,687,804.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,273.52 : 2,936,776.92 = 1,223,147.12 : x
  2. Step 2: Convert to fraction form
    2,128,273.52/2,936,776.92 = 1,223,147.12/x
  3. Step 3: Cross multiply
    2,128,273.52x = 2,936,776.92 × 1,223,147.12
  4. Step 4: Simplify right side
    2,128,273.52x = 3,592,110,231,780.47
  5. Step 5: Solve for x
    x = 3,592,110,231,780.47/2,128,273.52
  6. Step 6: Final answer
    x = 1,687,804.79

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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.