Home / 1,253,140.76-1,729,287.72-680,168.60

Finding the Fourth Proportional to 1,253,140.76, 1,729,287.72 and 680,168.60

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Solution

The fourth proportional to 1,253,140.76, 1,729,287.72 and 680,168.60 is: 938,607.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,140.76 : 1,729,287.72 = 680,168.60 : x
  2. Step 2: Convert to fraction form
    1,253,140.76/1,729,287.72 = 680,168.60/x
  3. Step 3: Cross multiply
    1,253,140.76x = 1,729,287.72 × 680,168.60
  4. Step 4: Simplify right side
    1,253,140.76x = 1,176,207,207,509.59
  5. Step 5: Solve for x
    x = 1,176,207,207,509.59/1,253,140.76
  6. Step 6: Final answer
    x = 938,607.41

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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.