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Finding the Fourth Proportional to 629,289.61, 868,411.83 and 342,803.54

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Solution

The fourth proportional to 629,289.61, 868,411.83 and 342,803.54 is: 473,064.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,289.61 : 868,411.83 = 342,803.54 : x
  2. Step 2: Convert to fraction form
    629,289.61/868,411.83 = 342,803.54/x
  3. Step 3: Cross multiply
    629,289.61x = 868,411.83 × 342,803.54
  4. Step 4: Simplify right side
    629,289.61x = 297,694,652,958.42
  5. Step 5: Solve for x
    x = 297,694,652,958.42/629,289.61
  6. Step 6: Final answer
    x = 473,064.63

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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.