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Finding the Fourth Proportional to 892,603.80, 1,231,791.84 and 490,195.80

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Solution

The fourth proportional to 892,603.80, 1,231,791.84 and 490,195.80 is: 676,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,603.80 : 1,231,791.84 = 490,195.80 : x
  2. Step 2: Convert to fraction form
    892,603.80/1,231,791.84 = 490,195.80/x
  3. Step 3: Cross multiply
    892,603.80x = 1,231,791.84 × 490,195.80
  4. Step 4: Simplify right side
    892,603.80x = 603,819,186,442.27
  5. Step 5: Solve for x
    x = 603,819,186,442.27/892,603.80
  6. Step 6: Final answer
    x = 676,469.43

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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.