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Finding the Fourth Proportional to 499,845.80, 749,768.70 and 451,634.60

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Solution

The fourth proportional to 499,845.80, 749,768.70 and 451,634.60 is: 677,451.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    499,845.80 : 749,768.70 = 451,634.60 : x
  2. Step 2: Convert to fraction form
    499,845.80/749,768.70 = 451,634.60/x
  3. Step 3: Cross multiply
    499,845.80x = 749,768.70 × 451,634.60
  4. Step 4: Simplify right side
    499,845.80x = 338,621,486,917.02
  5. Step 5: Solve for x
    x = 338,621,486,917.02/499,845.80
  6. Step 6: Final answer
    x = 677,451.90

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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.