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Finding the Fourth Proportional to 720,370.55, 1,080,516.72 and 365,375.29

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Solution

The fourth proportional to 720,370.55, 1,080,516.72 and 365,375.29 is: 548,043.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,370.55 : 1,080,516.72 = 365,375.29 : x
  2. Step 2: Convert to fraction form
    720,370.55/1,080,516.72 = 365,375.29/x
  3. Step 3: Cross multiply
    720,370.55x = 1,080,516.72 × 365,375.29
  4. Step 4: Simplify right side
    720,370.55x = 394,794,109,919.85
  5. Step 5: Solve for x
    x = 394,794,109,919.85/720,370.55
  6. Step 6: Final answer
    x = 548,043.10

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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.