Home / 1,218,591-1,681,266.78-789,200.28

Finding the Fourth Proportional to 1,218,591, 1,681,266.78 and 789,200.28

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Solution

The fourth proportional to 1,218,591, 1,681,266.78 and 789,200.28 is: 1,088,844.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,218,591 : 1,681,266.78 = 789,200.28 : x
  2. Step 2: Convert to fraction form
    1,218,591/1,681,266.78 = 789,200.28/x
  3. Step 3: Cross multiply
    1,218,591x = 1,681,266.78 × 789,200.28
  4. Step 4: Simplify right side
    1,218,591x = 1,326,856,213,530.70
  5. Step 5: Solve for x
    x = 1,326,856,213,530.70/1,218,591
  6. Step 6: Final answer
    x = 1,088,844.59

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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.