Home / 1,311,121.20-1,965,299.40-748,945.20

Finding the Fourth Proportional to 1,311,121.20, 1,965,299.40 and 748,945.20

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Solution

The fourth proportional to 1,311,121.20, 1,965,299.40 and 748,945.20 is: 1,122,628.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,311,121.20 : 1,965,299.40 = 748,945.20 : x
  2. Step 2: Convert to fraction form
    1,311,121.20/1,965,299.40 = 748,945.20/x
  3. Step 3: Cross multiply
    1,311,121.20x = 1,965,299.40 × 748,945.20
  4. Step 4: Simplify right side
    1,311,121.20x = 1,471,901,552,192.88
  5. Step 5: Solve for x
    x = 1,471,901,552,192.88/1,311,121.20
  6. Step 6: Final answer
    x = 1,122,628.14

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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.