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Finding the Fourth Proportional to 681,614.11, 940,668.56 and 375,690.07

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Solution

The fourth proportional to 681,614.11, 940,668.56 and 375,690.07 is: 518,474.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,614.11 : 940,668.56 = 375,690.07 : x
  2. Step 2: Convert to fraction form
    681,614.11/940,668.56 = 375,690.07/x
  3. Step 3: Cross multiply
    681,614.11x = 940,668.56 × 375,690.07
  4. Step 4: Simplify right side
    681,614.11x = 353,399,837,153.20
  5. Step 5: Solve for x
    x = 353,399,837,153.20/681,614.11
  6. Step 6: Final answer
    x = 518,474.94

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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.