Home / 1,321,812.45-1,982,761.79-629,229.15

Finding the Fourth Proportional to 1,321,812.45, 1,982,761.79 and 629,229.15

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Solution

The fourth proportional to 1,321,812.45, 1,982,761.79 and 629,229.15 is: 943,864.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,812.45 : 1,982,761.79 = 629,229.15 : x
  2. Step 2: Convert to fraction form
    1,321,812.45/1,982,761.79 = 629,229.15/x
  3. Step 3: Cross multiply
    1,321,812.45x = 1,982,761.79 × 629,229.15
  4. Step 4: Simplify right side
    1,321,812.45x = 1,247,611,512,628.03
  5. Step 5: Solve for x
    x = 1,247,611,512,628.03/1,321,812.45
  6. Step 6: Final answer
    x = 943,864.25

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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.