Home / 1,121,839.32-1,548,158.22-638,353.56

Finding the Fourth Proportional to 1,121,839.32, 1,548,158.22 and 638,353.56

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Solution

The fourth proportional to 1,121,839.32, 1,548,158.22 and 638,353.56 is: 880,939.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,121,839.32 : 1,548,158.22 = 638,353.56 : x
  2. Step 2: Convert to fraction form
    1,121,839.32/1,548,158.22 = 638,353.56/x
  3. Step 3: Cross multiply
    1,121,839.32x = 1,548,158.22 × 638,353.56
  4. Step 4: Simplify right side
    1,121,839.32x = 988,272,311,180.26
  5. Step 5: Solve for x
    x = 988,272,311,180.26/1,121,839.32
  6. Step 6: Final answer
    x = 880,939.27

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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.