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Finding the Fourth Proportional to 561,748.62, 775,157.39 and 320,016.79

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Solution

The fourth proportional to 561,748.62, 775,157.39 and 320,016.79 is: 441,591.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,748.62 : 775,157.39 = 320,016.79 : x
  2. Step 2: Convert to fraction form
    561,748.62/775,157.39 = 320,016.79/x
  3. Step 3: Cross multiply
    561,748.62x = 775,157.39 × 320,016.79
  4. Step 4: Simplify right side
    561,748.62x = 248,063,375,816.79
  5. Step 5: Solve for x
    x = 248,063,375,816.79/561,748.62
  6. Step 6: Final answer
    x = 441,591.43

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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.