Home / 1,222,243.35-1,686,683.45-678,383.84

Finding the Fourth Proportional to 1,222,243.35, 1,686,683.45 and 678,383.84

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Solution

The fourth proportional to 1,222,243.35, 1,686,683.45 and 678,383.84 is: 936,162.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,243.35 : 1,686,683.45 = 678,383.84 : x
  2. Step 2: Convert to fraction form
    1,222,243.35/1,686,683.45 = 678,383.84/x
  3. Step 3: Cross multiply
    1,222,243.35x = 1,686,683.45 × 678,383.84
  4. Step 4: Simplify right side
    1,222,243.35x = 1,144,218,783,850.11
  5. Step 5: Solve for x
    x = 1,144,218,783,850.11/1,222,243.35
  6. Step 6: Final answer
    x = 936,162.82

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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.