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Finding the Fourth Proportional to 686,675.22, 1,029,816 and 206,949.48

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Solution

The fourth proportional to 686,675.22, 1,029,816 and 206,949.48 is: 310,364.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,675.22 : 1,029,816 = 206,949.48 : x
  2. Step 2: Convert to fraction form
    686,675.22/1,029,816 = 206,949.48/x
  3. Step 3: Cross multiply
    686,675.22x = 1,029,816 × 206,949.48
  4. Step 4: Simplify right side
    686,675.22x = 213,119,885,695.68
  5. Step 5: Solve for x
    x = 213,119,885,695.68/686,675.22
  6. Step 6: Final answer
    x = 310,364.90

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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.