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Finding the Fourth Proportional to 652,206.80, 978,310.20 and 449,253.20

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Solution

The fourth proportional to 652,206.80, 978,310.20 and 449,253.20 is: 673,879.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,206.80 : 978,310.20 = 449,253.20 : x
  2. Step 2: Convert to fraction form
    652,206.80/978,310.20 = 449,253.20/x
  3. Step 3: Cross multiply
    652,206.80x = 978,310.20 × 449,253.20
  4. Step 4: Simplify right side
    652,206.80x = 439,508,987,942.64
  5. Step 5: Solve for x
    x = 439,508,987,942.64/652,206.80
  6. Step 6: Final answer
    x = 673,879.80

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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.