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Finding the Fourth Proportional to 629,439.70, 868,602.42 and 342,961.94

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Solution

The fourth proportional to 629,439.70, 868,602.42 and 342,961.94 is: 473,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,439.70 : 868,602.42 = 342,961.94 : x
  2. Step 2: Convert to fraction form
    629,439.70/868,602.42 = 342,961.94/x
  3. Step 3: Cross multiply
    629,439.70x = 868,602.42 × 342,961.94
  4. Step 4: Simplify right side
    629,439.70x = 297,897,571,051.90
  5. Step 5: Solve for x
    x = 297,897,571,051.90/629,439.70
  6. Step 6: Final answer
    x = 473,274.20

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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.