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Finding the Fourth Proportional to 629,137.92, 868,205.88 and 342,657.12

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Solution

The fourth proportional to 629,137.92, 868,205.88 and 342,657.12 is: 472,864.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,137.92 : 868,205.88 = 342,657.12 : x
  2. Step 2: Convert to fraction form
    629,137.92/868,205.88 = 342,657.12/x
  3. Step 3: Cross multiply
    629,137.92x = 868,205.88 × 342,657.12
  4. Step 4: Simplify right side
    629,137.92x = 297,496,926,407.87
  5. Step 5: Solve for x
    x = 297,496,926,407.87/629,137.92
  6. Step 6: Final answer
    x = 472,864.40

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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.