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Finding the Fourth Proportional to 681,611.86, 940,665.45 and 375,687.82

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Solution

The fourth proportional to 681,611.86, 940,665.45 and 375,687.82 is: 518,471.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,611.86 : 940,665.45 = 375,687.82 : x
  2. Step 2: Convert to fraction form
    681,611.86/940,665.45 = 375,687.82/x
  3. Step 3: Cross multiply
    681,611.86x = 940,665.45 × 375,687.82
  4. Step 4: Simplify right side
    681,611.86x = 353,396,552,259.82
  5. Step 5: Solve for x
    x = 353,396,552,259.82/681,611.86
  6. Step 6: Final answer
    x = 518,471.84

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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.