Home / 809,732.80-1,213,821.60-629,718.40

Finding the Fourth Proportional to 809,732.80, 1,213,821.60 and 629,718.40

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Solution

The fourth proportional to 809,732.80, 1,213,821.60 and 629,718.40 is: 943,972.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,732.80 : 1,213,821.60 = 629,718.40 : x
  2. Step 2: Convert to fraction form
    809,732.80/1,213,821.60 = 629,718.40/x
  3. Step 3: Cross multiply
    809,732.80x = 1,213,821.60 × 629,718.40
  4. Step 4: Simplify right side
    809,732.80x = 764,365,795,837.44
  5. Step 5: Solve for x
    x = 764,365,795,837.44/809,732.80
  6. Step 6: Final answer
    x = 943,972.87

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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.