Home / 449,122.72-619,642.14-320,081.52

Finding the Fourth Proportional to 449,122.72, 619,642.14 and 320,081.52

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Solution

The fourth proportional to 449,122.72, 619,642.14 and 320,081.52 is: 441,607.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,122.72 : 619,642.14 = 320,081.52 : x
  2. Step 2: Convert to fraction form
    449,122.72/619,642.14 = 320,081.52/x
  3. Step 3: Cross multiply
    449,122.72x = 619,642.14 × 320,081.52
  4. Step 4: Simplify right side
    449,122.72x = 198,335,998,027.25
  5. Step 5: Solve for x
    x = 198,335,998,027.25/449,122.72
  6. Step 6: Final answer
    x = 441,607.58

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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.