Home / 777,240.12-1,165,359.39-327,840.78

Finding the Fourth Proportional to 777,240.12, 1,165,359.39 and 327,840.78

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Solution

The fourth proportional to 777,240.12, 1,165,359.39 and 327,840.78 is: 491,549.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    777,240.12 : 1,165,359.39 = 327,840.78 : x
  2. Step 2: Convert to fraction form
    777,240.12/1,165,359.39 = 327,840.78/x
  3. Step 3: Cross multiply
    777,240.12x = 1,165,359.39 × 327,840.78
  4. Step 4: Simplify right side
    777,240.12x = 382,052,331,397.92
  5. Step 5: Solve for x
    x = 382,052,331,397.92/777,240.12
  6. Step 6: Final answer
    x = 491,549.94

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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.