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Finding the Fourth Proportional to 629,711.35, 868,999.59 and 343,231.45

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Solution

The fourth proportional to 629,711.35, 868,999.59 and 343,231.45 is: 473,658.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,711.35 : 868,999.59 = 343,231.45 : x
  2. Step 2: Convert to fraction form
    629,711.35/868,999.59 = 343,231.45/x
  3. Step 3: Cross multiply
    629,711.35x = 868,999.59 × 343,231.45
  4. Step 4: Simplify right side
    629,711.35x = 298,267,987,152.61
  5. Step 5: Solve for x
    x = 298,267,987,152.61/629,711.35
  6. Step 6: Final answer
    x = 473,658.27

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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.