Home / 1,222,255.76-1,686,700.24-678,396.29

Finding the Fourth Proportional to 1,222,255.76, 1,686,700.24 and 678,396.29

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Solution

The fourth proportional to 1,222,255.76, 1,686,700.24 and 678,396.29 is: 936,179.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,255.76 : 1,686,700.24 = 678,396.29 : x
  2. Step 2: Convert to fraction form
    1,222,255.76/1,686,700.24 = 678,396.29/x
  3. Step 3: Cross multiply
    1,222,255.76x = 1,686,700.24 × 678,396.29
  4. Step 4: Simplify right side
    1,222,255.76x = 1,144,251,175,028.62
  5. Step 5: Solve for x
    x = 1,144,251,175,028.62/1,222,255.76
  6. Step 6: Final answer
    x = 936,179.82

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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.