Home / 1,222,224.36-1,686,644.20-678,328.24

Finding the Fourth Proportional to 1,222,224.36, 1,686,644.20 and 678,328.24

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Solution

The fourth proportional to 1,222,224.36, 1,686,644.20 and 678,328.24 is: 936,078.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,224.36 : 1,686,644.20 = 678,328.24 : x
  2. Step 2: Convert to fraction form
    1,222,224.36/1,686,644.20 = 678,328.24/x
  3. Step 3: Cross multiply
    1,222,224.36x = 1,686,644.20 × 678,328.24
  4. Step 4: Simplify right side
    1,222,224.36x = 1,144,098,391,692.21
  5. Step 5: Solve for x
    x = 1,144,098,391,692.21/1,222,224.36
  6. Step 6: Final answer
    x = 936,078.87

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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.