Home / 1,224,128.26-1,689,339.51-680,286.97

Finding the Fourth Proportional to 1,224,128.26, 1,689,339.51 and 680,286.97

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Solution

The fourth proportional to 1,224,128.26, 1,689,339.51 and 680,286.97 is: 938,819.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,128.26 : 1,689,339.51 = 680,286.97 : x
  2. Step 2: Convert to fraction form
    1,224,128.26/1,689,339.51 = 680,286.97/x
  3. Step 3: Cross multiply
    1,224,128.26x = 1,689,339.51 × 680,286.97
  4. Step 4: Simplify right side
    1,224,128.26x = 1,149,235,656,559.18
  5. Step 5: Solve for x
    x = 1,149,235,656,559.18/1,224,128.26
  6. Step 6: Final answer
    x = 938,819.64

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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.