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Finding the Fourth Proportional to 389,797.38, 584,716.86 and 123,578.73

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Solution

The fourth proportional to 389,797.38, 584,716.86 and 123,578.73 is: 185,374.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,797.38 : 584,716.86 = 123,578.73 : x
  2. Step 2: Convert to fraction form
    389,797.38/584,716.86 = 123,578.73/x
  3. Step 3: Cross multiply
    389,797.38x = 584,716.86 × 123,578.73
  4. Step 4: Simplify right side
    389,797.38x = 72,258,566,968.39
  5. Step 5: Solve for x
    x = 72,258,566,968.39/389,797.38
  6. Step 6: Final answer
    x = 185,374.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.