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Finding the Fourth Proportional to 681,825.66, 940,710.87 and 395,288.55

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Solution

The fourth proportional to 681,825.66, 940,710.87 and 395,288.55 is: 545,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    681,825.66 : 940,710.87 = 395,288.55 : x
  2. Step 2: Convert to fraction form
    681,825.66/940,710.87 = 395,288.55/x
  3. Step 3: Cross multiply
    681,825.66x = 940,710.87 × 395,288.55
  4. Step 4: Simplify right side
    681,825.66x = 371,852,235,771.54
  5. Step 5: Solve for x
    x = 371,852,235,771.54/681,825.66
  6. Step 6: Final answer
    x = 545,377.30

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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.