Home / 809,780.80-1,213,893.60-629,766.40

Finding the Fourth Proportional to 809,780.80, 1,213,893.60 and 629,766.40

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Solution

The fourth proportional to 809,780.80, 1,213,893.60 and 629,766.40 is: 944,044.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,780.80 : 1,213,893.60 = 629,766.40 : x
  2. Step 2: Convert to fraction form
    809,780.80/1,213,893.60 = 629,766.40/x
  3. Step 3: Cross multiply
    809,780.80x = 1,213,893.60 × 629,766.40
  4. Step 4: Simplify right side
    809,780.80x = 764,469,402,455.04
  5. Step 5: Solve for x
    x = 764,469,402,455.04/809,780.80
  6. Step 6: Final answer
    x = 944,044.86

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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.