Home / 521,567,331.40-782,350,997.10-513,505,174.60

Finding the Fourth Proportional to 521,567,331.40, 782,350,997.10 and 513,505,174.60

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Solution

The fourth proportional to 521,567,331.40, 782,350,997.10 and 513,505,174.60 is: 770,257,761.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567,331.40 : 782,350,997.10 = 513,505,174.60 : x
  2. Step 2: Convert to fraction form
    521,567,331.40/782,350,997.10 = 513,505,174.60/x
  3. Step 3: Cross multiply
    521,567,331.40x = 782,350,997.10 × 513,505,174.60
  4. Step 4: Simplify right side
    521,567,331.40x = 401,741,285,364,319,616
  5. Step 5: Solve for x
    x = 401,741,285,364,319,616/521,567,331.40
  6. Step 6: Final answer
    x = 770,257,761.90

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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.