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Finding the Fourth Proportional to 526,796.36, 726,979 and 285,078.92

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Solution

The fourth proportional to 526,796.36, 726,979 and 285,078.92 is: 393,408.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,796.36 : 726,979 = 285,078.92 : x
  2. Step 2: Convert to fraction form
    526,796.36/726,979 = 285,078.92/x
  3. Step 3: Cross multiply
    526,796.36x = 726,979 × 285,078.92
  4. Step 4: Simplify right side
    526,796.36x = 207,246,388,182.68
  5. Step 5: Solve for x
    x = 207,246,388,182.68/526,796.36
  6. Step 6: Final answer
    x = 393,408.92

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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.