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Finding the Fourth Proportional to 629,286.90, 868,411.42 and 342,806.91

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Solution

The fourth proportional to 629,286.90, 868,411.42 and 342,806.91 is: 473,071.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,286.90 : 868,411.42 = 342,806.91 : x
  2. Step 2: Convert to fraction form
    629,286.90/868,411.42 = 342,806.91/x
  3. Step 3: Cross multiply
    629,286.90x = 868,411.42 × 342,806.91
  4. Step 4: Simplify right side
    629,286.90x = 297,697,435,498.91
  5. Step 5: Solve for x
    x = 297,697,435,498.91/629,286.90
  6. Step 6: Final answer
    x = 473,071.08

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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.