Home / 1,253,120.67-1,729,260.21-680,148.54

Finding the Fourth Proportional to 1,253,120.67, 1,729,260.21 and 680,148.54

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Solution

The fourth proportional to 1,253,120.67, 1,729,260.21 and 680,148.54 is: 938,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,253,120.67 : 1,729,260.21 = 680,148.54 : x
  2. Step 2: Convert to fraction form
    1,253,120.67/1,729,260.21 = 680,148.54/x
  3. Step 3: Cross multiply
    1,253,120.67x = 1,729,260.21 × 680,148.54
  4. Step 4: Simplify right side
    1,253,120.67x = 1,176,153,807,111.59
  5. Step 5: Solve for x
    x = 1,176,153,807,111.59/1,253,120.67
  6. Step 6: Final answer
    x = 938,579.85

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Double scale
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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.