Home / 2,125,381.78-3,188,761.86-1,272,320.56

Finding the Fourth Proportional to 2,125,381.78, 3,188,761.86 and 1,272,320.56

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Solution

The fourth proportional to 2,125,381.78, 3,188,761.86 and 1,272,320.56 is: 1,908,893.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,125,381.78 : 3,188,761.86 = 1,272,320.56 : x
  2. Step 2: Convert to fraction form
    2,125,381.78/3,188,761.86 = 1,272,320.56/x
  3. Step 3: Cross multiply
    2,125,381.78x = 3,188,761.86 × 1,272,320.56
  4. Step 4: Simplify right side
    2,125,381.78x = 4,057,127,259,478.03
  5. Step 5: Solve for x
    x = 4,057,127,259,478.03/2,125,381.78
  6. Step 6: Final answer
    x = 1,908,893.41

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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.