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Finding the Fourth Proportional to 681,615.11, 940,669.94 and 375,691.07

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Solution

The fourth proportional to 681,615.11, 940,669.94 and 375,691.07 is: 518,476.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,615.11 : 940,669.94 = 375,691.07 : x
  2. Step 2: Convert to fraction form
    681,615.11/940,669.94 = 375,691.07/x
  3. Step 3: Cross multiply
    681,615.11x = 940,669.94 × 375,691.07
  4. Step 4: Simplify right side
    681,615.11x = 353,401,296,275.44
  5. Step 5: Solve for x
    x = 353,401,296,275.44/681,615.11
  6. Step 6: Final answer
    x = 518,476.32

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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.