Home / 853,357.82-1,280,223.68-320,878.85

Finding the Fourth Proportional to 853,357.82, 1,280,223.68 and 320,878.85

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Solution

The fourth proportional to 853,357.82, 1,280,223.68 and 320,878.85 is: 481,388.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,357.82 : 1,280,223.68 = 320,878.85 : x
  2. Step 2: Convert to fraction form
    853,357.82/1,280,223.68 = 320,878.85/x
  3. Step 3: Cross multiply
    853,357.82x = 1,280,223.68 × 320,878.85
  4. Step 4: Simplify right side
    853,357.82x = 410,796,702,181.17
  5. Step 5: Solve for x
    x = 410,796,702,181.17/853,357.82
  6. Step 6: Final answer
    x = 481,388.57

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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.