Home / 869,219.40-1,304,217.90-419,766.60

Finding the Fourth Proportional to 869,219.40, 1,304,217.90 and 419,766.60

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Solution

The fourth proportional to 869,219.40, 1,304,217.90 and 419,766.60 is: 629,837.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,219.40 : 1,304,217.90 = 419,766.60 : x
  2. Step 2: Convert to fraction form
    869,219.40/1,304,217.90 = 419,766.60/x
  3. Step 3: Cross multiply
    869,219.40x = 1,304,217.90 × 419,766.60
  4. Step 4: Simplify right side
    869,219.40x = 547,467,113,542.14
  5. Step 5: Solve for x
    x = 547,467,113,542.14/869,219.40
  6. Step 6: Final answer
    x = 629,837.66

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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.