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Finding the Fourth Proportional to 629,393.97, 868,885.34 and 426,516.78

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Solution

The fourth proportional to 629,393.97, 868,885.34 and 426,516.78 is: 588,811.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,393.97 : 868,885.34 = 426,516.78 : x
  2. Step 2: Convert to fraction form
    629,393.97/868,885.34 = 426,516.78/x
  3. Step 3: Cross multiply
    629,393.97x = 868,885.34 × 426,516.78
  4. Step 4: Simplify right side
    629,393.97x = 370,594,175,273.42
  5. Step 5: Solve for x
    x = 370,594,175,273.42/629,393.97
  6. Step 6: Final answer
    x = 588,811.13

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1.5x scale

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.