Home / 1,296,015.40-1,942,467.90-664,604.20

Finding the Fourth Proportional to 1,296,015.40, 1,942,467.90 and 664,604.20

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Solution

The fourth proportional to 1,296,015.40, 1,942,467.90 and 664,604.20 is: 996,108.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,015.40 : 1,942,467.90 = 664,604.20 : x
  2. Step 2: Convert to fraction form
    1,296,015.40/1,942,467.90 = 664,604.20/x
  3. Step 3: Cross multiply
    1,296,015.40x = 1,942,467.90 × 664,604.20
  4. Step 4: Simplify right side
    1,296,015.40x = 1,290,972,324,705.18
  5. Step 5: Solve for x
    x = 1,290,972,324,705.18/1,296,015.40
  6. Step 6: Final answer
    x = 996,108.78

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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.