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Finding the Fourth Proportional to 681,875.62, 940,759.92 and 440,321.47

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Solution

The fourth proportional to 681,875.62, 940,759.92 and 440,321.47 is: 607,496.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,875.62 : 940,759.92 = 440,321.47 : x
  2. Step 2: Convert to fraction form
    681,875.62/940,759.92 = 440,321.47/x
  3. Step 3: Cross multiply
    681,875.62x = 940,759.92 × 440,321.47
  4. Step 4: Simplify right side
    681,875.62x = 414,236,788,539.58
  5. Step 5: Solve for x
    x = 414,236,788,539.58/681,875.62
  6. Step 6: Final answer
    x = 607,496.11

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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.