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Finding the Fourth Proportional to 490,166.60, 735,249.90 and 445,843.40

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Solution

The fourth proportional to 490,166.60, 735,249.90 and 445,843.40 is: 668,765.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,166.60 : 735,249.90 = 445,843.40 : x
  2. Step 2: Convert to fraction form
    490,166.60/735,249.90 = 445,843.40/x
  3. Step 3: Cross multiply
    490,166.60x = 735,249.90 × 445,843.40
  4. Step 4: Simplify right side
    490,166.60x = 327,806,315,265.66
  5. Step 5: Solve for x
    x = 327,806,315,265.66/490,166.60
  6. Step 6: Final answer
    x = 668,765.10

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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.