Home / 1,321,912.26-1,979,792.69-1,285,546.77

Finding the Fourth Proportional to 1,321,912.26, 1,979,792.69 and 1,285,546.77

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Solution

The fourth proportional to 1,321,912.26, 1,979,792.69 and 1,285,546.77 is: 1,925,329.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,321,912.26 : 1,979,792.69 = 1,285,546.77 : x
  2. Step 2: Convert to fraction form
    1,321,912.26/1,979,792.69 = 1,285,546.77/x
  3. Step 3: Cross multiply
    1,321,912.26x = 1,979,792.69 × 1,285,546.77
  4. Step 4: Simplify right side
    1,321,912.26x = 2,545,116,091,471.38
  5. Step 5: Solve for x
    x = 2,545,116,091,471.38/1,321,912.26
  6. Step 6: Final answer
    x = 1,925,329.06

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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.