Home / 521,567,406.40-782,351,109.60-513,505,249.60

Finding the Fourth Proportional to 521,567,406.40, 782,351,109.60 and 513,505,249.60

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Solution

The fourth proportional to 521,567,406.40, 782,351,109.60 and 513,505,249.60 is: 770,257,874.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567,406.40 : 782,351,109.60 = 513,505,249.60 : x
  2. Step 2: Convert to fraction form
    521,567,406.40/782,351,109.60 = 513,505,249.60/x
  3. Step 3: Cross multiply
    521,567,406.40x = 782,351,109.60 × 513,505,249.60
  4. Step 4: Simplify right side
    521,567,406.40x = 401,741,401,809,984,960
  5. Step 5: Solve for x
    x = 401,741,401,809,984,960/521,567,406.40
  6. Step 6: Final answer
    x = 770,257,874.40

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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.