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Finding the Fourth Proportional to 629,854.80, 945,000.90 and 275,123.40

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Solution

The fourth proportional to 629,854.80, 945,000.90 and 275,123.40 is: 412,780.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,854.80 : 945,000.90 = 275,123.40 : x
  2. Step 2: Convert to fraction form
    629,854.80/945,000.90 = 275,123.40/x
  3. Step 3: Cross multiply
    629,854.80x = 945,000.90 × 275,123.40
  4. Step 4: Simplify right side
    629,854.80x = 259,991,860,611.06
  5. Step 5: Solve for x
    x = 259,991,860,611.06/629,854.80
  6. Step 6: Final answer
    x = 412,780.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.