Home / 809,726.80-1,213,812.60-629,712.40

Finding the Fourth Proportional to 809,726.80, 1,213,812.60 and 629,712.40

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Solution

The fourth proportional to 809,726.80, 1,213,812.60 and 629,712.40 is: 943,963.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,726.80 : 1,213,812.60 = 629,712.40 : x
  2. Step 2: Convert to fraction form
    809,726.80/1,213,812.60 = 629,712.40/x
  3. Step 3: Cross multiply
    809,726.80x = 1,213,812.60 × 629,712.40
  4. Step 4: Simplify right side
    809,726.80x = 764,352,845,496.24
  5. Step 5: Solve for x
    x = 764,352,845,496.24/809,726.80
  6. Step 6: Final answer
    x = 943,963.87

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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.