Home / 1,253,109.35-1,729,292.87-680,149.78

Finding the Fourth Proportional to 1,253,109.35, 1,729,292.87 and 680,149.78

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Solution

The fourth proportional to 1,253,109.35, 1,729,292.87 and 680,149.78 is: 938,607.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,109.35 : 1,729,292.87 = 680,149.78 : x
  2. Step 2: Convert to fraction form
    1,253,109.35/1,729,292.87 = 680,149.78/x
  3. Step 3: Cross multiply
    1,253,109.35x = 1,729,292.87 × 680,149.78
  4. Step 4: Simplify right side
    1,253,109.35x = 1,176,178,153,038.86
  5. Step 5: Solve for x
    x = 1,176,178,153,038.86/1,253,109.35
  6. Step 6: Final answer
    x = 938,607.75

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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.