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Finding the Fourth Proportional to 526,780.05, 726,958.38 and 285,062.60

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Solution

The fourth proportional to 526,780.05, 726,958.38 and 285,062.60 is: 393,387.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,780.05 : 726,958.38 = 285,062.60 : x
  2. Step 2: Convert to fraction form
    526,780.05/726,958.38 = 285,062.60/x
  3. Step 3: Cross multiply
    526,780.05x = 726,958.38 × 285,062.60
  4. Step 4: Simplify right side
    526,780.05x = 207,228,645,894.59
  5. Step 5: Solve for x
    x = 207,228,645,894.59/526,780.05
  6. Step 6: Final answer
    x = 393,387.42

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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.