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Finding the Fourth Proportional to 681,425.12, 940,419.78 and 375,556.34

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Solution

The fourth proportional to 681,425.12, 940,419.78 and 375,556.34 is: 518,297.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,425.12 : 940,419.78 = 375,556.34 : x
  2. Step 2: Convert to fraction form
    681,425.12/940,419.78 = 375,556.34/x
  3. Step 3: Cross multiply
    681,425.12x = 940,419.78 × 375,556.34
  4. Step 4: Simplify right side
    681,425.12x = 353,180,610,640.41
  5. Step 5: Solve for x
    x = 353,180,610,640.41/681,425.12
  6. Step 6: Final answer
    x = 518,297.02

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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.