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Finding the Fourth Proportional to 629,239.07, 868,348.59 and 342,758.48

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Solution

The fourth proportional to 629,239.07, 868,348.59 and 342,758.48 is: 473,005.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,239.07 : 868,348.59 = 342,758.48 : x
  2. Step 2: Convert to fraction form
    629,239.07/868,348.59 = 342,758.48/x
  3. Step 3: Cross multiply
    629,239.07x = 868,348.59 × 342,758.48
  4. Step 4: Simplify right side
    629,239.07x = 297,633,838,476.80
  5. Step 5: Solve for x
    x = 297,633,838,476.80/629,239.07
  6. Step 6: Final answer
    x = 473,005.98

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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.