Home / 1,222,243.05-1,686,682.62-678,383.54

Finding the Fourth Proportional to 1,222,243.05, 1,686,682.62 and 678,383.54

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Solution

The fourth proportional to 1,222,243.05, 1,686,682.62 and 678,383.54 is: 936,162.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,243.05 : 1,686,682.62 = 678,383.54 : x
  2. Step 2: Convert to fraction form
    1,222,243.05/1,686,682.62 = 678,383.54/x
  3. Step 3: Cross multiply
    1,222,243.05x = 1,686,682.62 × 678,383.54
  4. Step 4: Simplify right side
    1,222,243.05x = 1,144,217,718,178.66
  5. Step 5: Solve for x
    x = 1,144,217,718,178.66/1,222,243.05
  6. Step 6: Final answer
    x = 936,162.18

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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.