Home / 1,222,175.10-1,686,576.26-678,279.26

Finding the Fourth Proportional to 1,222,175.10, 1,686,576.26 and 678,279.26

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Solution

The fourth proportional to 1,222,175.10, 1,686,576.26 and 678,279.26 is: 936,011.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,175.10 : 1,686,576.26 = 678,279.26 : x
  2. Step 2: Convert to fraction form
    1,222,175.10/1,686,576.26 = 678,279.26/x
  3. Step 3: Cross multiply
    1,222,175.10x = 1,686,576.26 × 678,279.26
  4. Step 4: Simplify right side
    1,222,175.10x = 1,143,969,697,566.37
  5. Step 5: Solve for x
    x = 1,143,969,697,566.37/1,222,175.10
  6. Step 6: Final answer
    x = 936,011.29

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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.