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Finding the Fourth Proportional to 579,692.88, 799,975.43 and 321,608.96

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Solution

The fourth proportional to 579,692.88, 799,975.43 and 321,608.96 is: 443,819.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,692.88 : 799,975.43 = 321,608.96 : x
  2. Step 2: Convert to fraction form
    579,692.88/799,975.43 = 321,608.96/x
  3. Step 3: Cross multiply
    579,692.88x = 799,975.43 × 321,608.96
  4. Step 4: Simplify right side
    579,692.88x = 257,279,266,067.85
  5. Step 5: Solve for x
    x = 257,279,266,067.85/579,692.88
  6. Step 6: Final answer
    x = 443,819.95

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1.5x scale

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.