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Finding the Fourth Proportional to 681,825.44, 940,710.60 and 395,288.36

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Solution

The fourth proportional to 681,825.44, 940,710.60 and 395,288.36 is: 545,377.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,825.44 : 940,710.60 = 395,288.36 : x
  2. Step 2: Convert to fraction form
    681,825.44/940,710.60 = 395,288.36/x
  3. Step 3: Cross multiply
    681,825.44x = 940,710.60 × 395,288.36
  4. Step 4: Simplify right side
    681,825.44x = 371,851,950,308.62
  5. Step 5: Solve for x
    x = 371,851,950,308.62/681,825.44
  6. Step 6: Final answer
    x = 545,377.05

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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.