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Finding the Fourth Proportional to 629,270.61, 868,406.85 and 342,790.08

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Solution

The fourth proportional to 629,270.61, 868,406.85 and 342,790.08 is: 473,057.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,270.61 : 868,406.85 = 342,790.08 : x
  2. Step 2: Convert to fraction form
    629,270.61/868,406.85 = 342,790.08/x
  3. Step 3: Cross multiply
    629,270.61x = 868,406.85 × 342,790.08
  4. Step 4: Simplify right side
    629,270.61x = 297,681,253,584.05
  5. Step 5: Solve for x
    x = 297,681,253,584.05/629,270.61
  6. Step 6: Final answer
    x = 473,057.61

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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.