Home / 727,415.20-1,090,604.40-327,728.80

Finding the Fourth Proportional to 727,415.20, 1,090,604.40 and 327,728.80

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Solution

The fourth proportional to 727,415.20, 1,090,604.40 and 327,728.80 is: 491,359.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,415.20 : 1,090,604.40 = 327,728.80 : x
  2. Step 2: Convert to fraction form
    727,415.20/1,090,604.40 = 327,728.80/x
  3. Step 3: Cross multiply
    727,415.20x = 1,090,604.40 × 327,728.80
  4. Step 4: Simplify right side
    727,415.20x = 357,422,471,286.72
  5. Step 5: Solve for x
    x = 357,422,471,286.72/727,415.20
  6. Step 6: Final answer
    x = 491,359.64

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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.