Home / 2,128,191.10-3,188,139.45-1,284,235.90

Finding the Fourth Proportional to 2,128,191.10, 3,188,139.45 and 1,284,235.90

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Solution

The fourth proportional to 2,128,191.10, 3,188,139.45 and 1,284,235.90 is: 1,923,851.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128,191.10 : 3,188,139.45 = 1,284,235.90 : x
  2. Step 2: Convert to fraction form
    2,128,191.10/3,188,139.45 = 1,284,235.90/x
  3. Step 3: Cross multiply
    2,128,191.10x = 3,188,139.45 × 1,284,235.90
  4. Step 4: Simplify right side
    2,128,191.10x = 4,094,323,135,896.26
  5. Step 5: Solve for x
    x = 4,094,323,135,896.26/2,128,191.10
  6. Step 6: Final answer
    x = 1,923,851.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.