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Finding the Fourth Proportional to 629,292.86, 868,416.31 and 342,806.79

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Solution

The fourth proportional to 629,292.86, 868,416.31 and 342,806.79 is: 473,069.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,292.86 : 868,416.31 = 342,806.79 : x
  2. Step 2: Convert to fraction form
    629,292.86/868,416.31 = 342,806.79/x
  3. Step 3: Cross multiply
    629,292.86x = 868,416.31 × 342,806.79
  4. Step 4: Simplify right side
    629,292.86x = 297,699,007,614.75
  5. Step 5: Solve for x
    x = 297,699,007,614.75/629,292.86
  6. Step 6: Final answer
    x = 473,069.10

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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.