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Finding the Fourth Proportional to 629,576.70, 868,790.52 and 343,090.64

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Solution

The fourth proportional to 629,576.70, 868,790.52 and 343,090.64 is: 473,451.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,576.70 : 868,790.52 = 343,090.64 : x
  2. Step 2: Convert to fraction form
    629,576.70/868,790.52 = 343,090.64/x
  3. Step 3: Cross multiply
    629,576.70x = 868,790.52 × 343,090.64
  4. Step 4: Simplify right side
    629,576.70x = 298,073,891,188.78
  5. Step 5: Solve for x
    x = 298,073,891,188.78/629,576.70
  6. Step 6: Final answer
    x = 473,451.27

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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.