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Finding the Fourth Proportional to 652,763.43, 978,685.88 and 253,067.31

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Solution

The fourth proportional to 652,763.43, 978,685.88 and 253,067.31 is: 379,422.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,763.43 : 978,685.88 = 253,067.31 : x
  2. Step 2: Convert to fraction form
    652,763.43/978,685.88 = 253,067.31/x
  3. Step 3: Cross multiply
    652,763.43x = 978,685.88 × 253,067.31
  4. Step 4: Simplify right side
    652,763.43x = 247,673,401,721.25
  5. Step 5: Solve for x
    x = 247,673,401,721.25/652,763.43
  6. Step 6: Final answer
    x = 379,422.91

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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.