Home / 1,253,078.70-1,729,250.22-680,118.90

Finding the Fourth Proportional to 1,253,078.70, 1,729,250.22 and 680,118.90

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Solution

The fourth proportional to 1,253,078.70, 1,729,250.22 and 680,118.90 is: 938,564.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,078.70 : 1,729,250.22 = 680,118.90 : x
  2. Step 2: Convert to fraction form
    1,253,078.70/1,729,250.22 = 680,118.90/x
  3. Step 3: Cross multiply
    1,253,078.70x = 1,729,250.22 × 680,118.90
  4. Step 4: Simplify right side
    1,253,078.70x = 1,176,095,757,451.16
  5. Step 5: Solve for x
    x = 1,176,095,757,451.16/1,253,078.70
  6. Step 6: Final answer
    x = 938,564.96

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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.