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Finding the Fourth Proportional to 629,661.20, 868,951.42 and 343,199.84

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Solution

The fourth proportional to 629,661.20, 868,951.42 and 343,199.84 is: 473,626.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,661.20 : 868,951.42 = 343,199.84 : x
  2. Step 2: Convert to fraction form
    629,661.20/868,951.42 = 343,199.84/x
  3. Step 3: Cross multiply
    629,661.20x = 868,951.42 × 343,199.84
  4. Step 4: Simplify right side
    629,661.20x = 298,223,988,311.77
  5. Step 5: Solve for x
    x = 298,223,988,311.77/629,661.20
  6. Step 6: Final answer
    x = 473,626.12

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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.