Home / 1,126,520.40-1,689,780.20-748,179.75

Finding the Fourth Proportional to 1,126,520.40, 1,689,780.20 and 748,179.75

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Solution

The fourth proportional to 1,126,520.40, 1,689,780.20 and 748,179.75 is: 1,122,269.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126,520.40 : 1,689,780.20 = 748,179.75 : x
  2. Step 2: Convert to fraction form
    1,126,520.40/1,689,780.20 = 748,179.75/x
  3. Step 3: Cross multiply
    1,126,520.40x = 1,689,780.20 × 748,179.75
  4. Step 4: Simplify right side
    1,126,520.40x = 1,264,259,323,850.05
  5. Step 5: Solve for x
    x = 1,264,259,323,850.05/1,126,520.40
  6. Step 6: Final answer
    x = 1,122,269.36

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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.