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Finding the Fourth Proportional to 681,418.23, 940,363.46 and 375,505.56

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Solution

The fourth proportional to 681,418.23, 940,363.46 and 375,505.56 is: 518,201.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,418.23 : 940,363.46 = 375,505.56 : x
  2. Step 2: Convert to fraction form
    681,418.23/940,363.46 = 375,505.56/x
  3. Step 3: Cross multiply
    681,418.23x = 940,363.46 × 375,505.56
  4. Step 4: Simplify right side
    681,418.23x = 353,111,702,010.26
  5. Step 5: Solve for x
    x = 353,111,702,010.26/681,418.23
  6. Step 6: Final answer
    x = 518,201.14

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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.