Home / 765,286.90-1,147,949.25-365,969.86

Finding the Fourth Proportional to 765,286.90, 1,147,949.25 and 365,969.86

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Solution

The fourth proportional to 765,286.90, 1,147,949.25 and 365,969.86 is: 548,963.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,286.90 : 1,147,949.25 = 365,969.86 : x
  2. Step 2: Convert to fraction form
    765,286.90/1,147,949.25 = 365,969.86/x
  3. Step 3: Cross multiply
    765,286.90x = 1,147,949.25 × 365,969.86
  4. Step 4: Simplify right side
    765,286.90x = 420,114,826,309.61
  5. Step 5: Solve for x
    x = 420,114,826,309.61/765,286.90
  6. Step 6: Final answer
    x = 548,963.83

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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.