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Finding the Fourth Proportional to 681,448.69, 940,405.41 and 375,536.04

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Solution

The fourth proportional to 681,448.69, 940,405.41 and 375,536.04 is: 518,243.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,448.69 : 940,405.41 = 375,536.04 : x
  2. Step 2: Convert to fraction form
    681,448.69/940,405.41 = 375,536.04/x
  3. Step 3: Cross multiply
    681,448.69x = 940,405.41 × 375,536.04
  4. Step 4: Simplify right side
    681,448.69x = 353,156,117,086.27
  5. Step 5: Solve for x
    x = 353,156,117,086.27/681,448.69
  6. Step 6: Final answer
    x = 518,243.15

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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.