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Finding the Fourth Proportional to 680,375.30, 938,976.30 and 374,512.41

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Solution

The fourth proportional to 680,375.30, 938,976.30 and 374,512.41 is: 516,859.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,375.30 : 938,976.30 = 374,512.41 : x
  2. Step 2: Convert to fraction form
    680,375.30/938,976.30 = 374,512.41/x
  3. Step 3: Cross multiply
    680,375.30x = 938,976.30 × 374,512.41
  4. Step 4: Simplify right side
    680,375.30x = 351,658,277,045.88
  5. Step 5: Solve for x
    x = 351,658,277,045.88/680,375.30
  6. Step 6: Final answer
    x = 516,859.27

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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.