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Finding the Fourth Proportional to 629,367.84, 868,504.50 and 342,881.78

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Solution

The fourth proportional to 629,367.84, 868,504.50 and 342,881.78 is: 473,164.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,367.84 : 868,504.50 = 342,881.78 : x
  2. Step 2: Convert to fraction form
    629,367.84/868,504.50 = 342,881.78/x
  3. Step 3: Cross multiply
    629,367.84x = 868,504.50 × 342,881.78
  4. Step 4: Simplify right side
    629,367.84x = 297,794,368,898.01
  5. Step 5: Solve for x
    x = 297,794,368,898.01/629,367.84
  6. Step 6: Final answer
    x = 473,164.26

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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.