Home / 1,222,229.80-1,686,644.71-678,351.56

Finding the Fourth Proportional to 1,222,229.80, 1,686,644.71 and 678,351.56

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Solution

The fourth proportional to 1,222,229.80, 1,686,644.71 and 678,351.56 is: 936,107.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,229.80 : 1,686,644.71 = 678,351.56 : x
  2. Step 2: Convert to fraction form
    1,222,229.80/1,686,644.71 = 678,351.56/x
  3. Step 3: Cross multiply
    1,222,229.80x = 1,686,644.71 × 678,351.56
  4. Step 4: Simplify right side
    1,222,229.80x = 1,144,138,060,065.15
  5. Step 5: Solve for x
    x = 1,144,138,060,065.15/1,222,229.80
  6. Step 6: Final answer
    x = 936,107.15

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.