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Finding the Fourth Proportional to 629,353.40, 868,505.10 and 342,872.60

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Solution

The fourth proportional to 629,353.40, 868,505.10 and 342,872.60 is: 473,162.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,353.40 : 868,505.10 = 342,872.60 : x
  2. Step 2: Convert to fraction form
    629,353.40/868,505.10 = 342,872.60/x
  3. Step 3: Cross multiply
    629,353.40x = 868,505.10 × 342,872.60
  4. Step 4: Simplify right side
    629,353.40x = 297,786,601,750.26
  5. Step 5: Solve for x
    x = 297,786,601,750.26/629,353.40
  6. Step 6: Final answer
    x = 473,162.78

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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.