Home / 698,721.33-964,115.29-392,755.26

Finding the Fourth Proportional to 698,721.33, 964,115.29 and 392,755.26

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Solution

The fourth proportional to 698,721.33, 964,115.29 and 392,755.26 is: 541,934.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,721.33 : 964,115.29 = 392,755.26 : x
  2. Step 2: Convert to fraction form
    698,721.33/964,115.29 = 392,755.26/x
  3. Step 3: Cross multiply
    698,721.33x = 964,115.29 × 392,755.26
  4. Step 4: Simplify right side
    698,721.33x = 378,661,351,393.93
  5. Step 5: Solve for x
    x = 378,661,351,393.93/698,721.33
  6. Step 6: Final answer
    x = 541,934.72

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Double scale
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Similar ratio
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1.5x scale

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.