Home / 419,981.20-629,974.31-104,438.11

Finding the Fourth Proportional to 419,981.20, 629,974.31 and 104,438.11

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Solution

The fourth proportional to 419,981.20, 629,974.31 and 104,438.11 is: 156,657.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,981.20 : 629,974.31 = 104,438.11 : x
  2. Step 2: Convert to fraction form
    419,981.20/629,974.31 = 104,438.11/x
  3. Step 3: Cross multiply
    419,981.20x = 629,974.31 × 104,438.11
  4. Step 4: Simplify right side
    419,981.20x = 65,793,326,284.95
  5. Step 5: Solve for x
    x = 65,793,326,284.95/419,981.20
  6. Step 6: Final answer
    x = 156,657.79

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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.