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Finding the Fourth Proportional to 629,438.36, 868,613.98 and 342,960.80

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Solution

The fourth proportional to 629,438.36, 868,613.98 and 342,960.80 is: 473,279.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,438.36 : 868,613.98 = 342,960.80 : x
  2. Step 2: Convert to fraction form
    629,438.36/868,613.98 = 342,960.80/x
  3. Step 3: Cross multiply
    629,438.36x = 868,613.98 × 342,960.80
  4. Step 4: Simplify right side
    629,438.36x = 297,900,545,471.98
  5. Step 5: Solve for x
    x = 297,900,545,471.98/629,438.36
  6. Step 6: Final answer
    x = 473,279.93

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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.