Home / 1,222,770.94-1,687,476.60-678,906.81

Finding the Fourth Proportional to 1,222,770.94, 1,687,476.60 and 678,906.81

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Solution

The fourth proportional to 1,222,770.94, 1,687,476.60 and 678,906.81 is: 936,920.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,770.94 : 1,687,476.60 = 678,906.81 : x
  2. Step 2: Convert to fraction form
    1,222,770.94/1,687,476.60 = 678,906.81/x
  3. Step 3: Cross multiply
    1,222,770.94x = 1,687,476.60 × 678,906.81
  4. Step 4: Simplify right side
    1,222,770.94x = 1,145,639,355,455.65
  5. Step 5: Solve for x
    x = 1,145,639,355,455.65/1,222,770.94
  6. Step 6: Final answer
    x = 936,920.66

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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.