Home / 920,269.82-1,380,736.88-321,319.22

Finding the Fourth Proportional to 920,269.82, 1,380,736.88 and 321,319.22

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Solution

The fourth proportional to 920,269.82, 1,380,736.88 and 321,319.22 is: 482,094.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,269.82 : 1,380,736.88 = 321,319.22 : x
  2. Step 2: Convert to fraction form
    920,269.82/1,380,736.88 = 321,319.22/x
  3. Step 3: Cross multiply
    920,269.82x = 1,380,736.88 × 321,319.22
  4. Step 4: Simplify right side
    920,269.82x = 443,657,288,796.55
  5. Step 5: Solve for x
    x = 443,657,288,796.55/920,269.82
  6. Step 6: Final answer
    x = 482,094.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.