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Finding the Fourth Proportional to 629,410.68, 868,596.66 and 342,930.72

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Solution

The fourth proportional to 629,410.68, 868,596.66 and 342,930.72 is: 473,249.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,410.68 : 868,596.66 = 342,930.72 : x
  2. Step 2: Convert to fraction form
    629,410.68/868,596.66 = 342,930.72/x
  3. Step 3: Cross multiply
    629,410.68x = 868,596.66 × 342,930.72
  4. Step 4: Simplify right side
    629,410.68x = 297,868,478,003.40
  5. Step 5: Solve for x
    x = 297,868,478,003.40/629,410.68
  6. Step 6: Final answer
    x = 473,249.80

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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.