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Finding the Fourth Proportional to 681,633.33, 940,611.21 and 375,692.88

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Solution

The fourth proportional to 681,633.33, 940,611.21 and 375,692.88 is: 518,432.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,633.33 : 940,611.21 = 375,692.88 : x
  2. Step 2: Convert to fraction form
    681,633.33/940,611.21 = 375,692.88/x
  3. Step 3: Cross multiply
    681,633.33x = 940,611.21 × 375,692.88
  4. Step 4: Simplify right side
    681,633.33x = 353,380,927,863.66
  5. Step 5: Solve for x
    x = 353,380,927,863.66/681,633.33
  6. Step 6: Final answer
    x = 518,432.58

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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.