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Finding the Fourth Proportional to 568,318.68, 784,278.09 and 313,668

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Solution

The fourth proportional to 568,318.68, 784,278.09 and 313,668 is: 432,860.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    568,318.68 : 784,278.09 = 313,668 : x
  2. Step 2: Convert to fraction form
    568,318.68/784,278.09 = 313,668/x
  3. Step 3: Cross multiply
    568,318.68x = 784,278.09 × 313,668
  4. Step 4: Simplify right side
    568,318.68x = 246,002,939,934.12
  5. Step 5: Solve for x
    x = 246,002,939,934.12/568,318.68
  6. Step 6: Final answer
    x = 432,860.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.