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Finding the Fourth Proportional to 629,288.80, 868,414.28 and 342,809.08

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Solution

The fourth proportional to 629,288.80, 868,414.28 and 342,809.08 is: 473,074.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,288.80 : 868,414.28 = 342,809.08 : x
  2. Step 2: Convert to fraction form
    629,288.80/868,414.28 = 342,809.08/x
  3. Step 3: Cross multiply
    629,288.80x = 868,414.28 × 342,809.08
  4. Step 4: Simplify right side
    629,288.80x = 297,700,300,385.66
  5. Step 5: Solve for x
    x = 297,700,300,385.66/629,288.80
  6. Step 6: Final answer
    x = 473,074.21

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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.