Home / 809,725.80-1,213,811.10-629,711.40

Finding the Fourth Proportional to 809,725.80, 1,213,811.10 and 629,711.40

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Solution

The fourth proportional to 809,725.80, 1,213,811.10 and 629,711.40 is: 943,962.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,725.80 : 1,213,811.10 = 629,711.40 : x
  2. Step 2: Convert to fraction form
    809,725.80/1,213,811.10 = 629,711.40/x
  3. Step 3: Cross multiply
    809,725.80x = 1,213,811.10 × 629,711.40
  4. Step 4: Simplify right side
    809,725.80x = 764,350,687,116.54
  5. Step 5: Solve for x
    x = 764,350,687,116.54/809,725.80
  6. Step 6: Final answer
    x = 943,962.37

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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.