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Finding the Fourth Proportional to 720,310.28, 1,080,148.84 and 383,270.82

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Solution

The fourth proportional to 720,310.28, 1,080,148.84 and 383,270.82 is: 574,737.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,310.28 : 1,080,148.84 = 383,270.82 : x
  2. Step 2: Convert to fraction form
    720,310.28/1,080,148.84 = 383,270.82/x
  3. Step 3: Cross multiply
    720,310.28x = 1,080,148.84 × 383,270.82
  4. Step 4: Simplify right side
    720,310.28x = 413,989,531,628.85
  5. Step 5: Solve for x
    x = 413,989,531,628.85/720,310.28
  6. Step 6: Final answer
    x = 574,737.78

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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.