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Finding the Fourth Proportional to 629,690.82, 868,963.32 and 343,213.26

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Solution

The fourth proportional to 629,690.82, 868,963.32 and 343,213.26 is: 473,628.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,690.82 : 868,963.32 = 343,213.26 : x
  2. Step 2: Convert to fraction form
    629,690.82/868,963.32 = 343,213.26/x
  3. Step 3: Cross multiply
    629,690.82x = 868,963.32 × 343,213.26
  4. Step 4: Simplify right side
    629,690.82x = 298,239,733,877.62
  5. Step 5: Solve for x
    x = 298,239,733,877.62/629,690.82
  6. Step 6: Final answer
    x = 473,628.84

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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.