Home / 521,567,175.90-782,350,763.85-513,505,019.10

Finding the Fourth Proportional to 521,567,175.90, 782,350,763.85 and 513,505,019.10

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Solution

The fourth proportional to 521,567,175.90, 782,350,763.85 and 513,505,019.10 is: 770,257,528.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567,175.90 : 782,350,763.85 = 513,505,019.10 : x
  2. Step 2: Convert to fraction form
    521,567,175.90/782,350,763.85 = 513,505,019.10/x
  3. Step 3: Cross multiply
    521,567,175.90x = 782,350,763.85 × 513,505,019.10
  4. Step 4: Simplify right side
    521,567,175.90x = 401,741,043,933,693,888
  5. Step 5: Solve for x
    x = 401,741,043,933,693,888/521,567,175.90
  6. Step 6: Final answer
    x = 770,257,528.65

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Similar ratio
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1.5x scale

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.