Home / 521,567,436.90-782,351,155.35-513,505,280.10

Finding the Fourth Proportional to 521,567,436.90, 782,351,155.35 and 513,505,280.10

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Solution

The fourth proportional to 521,567,436.90, 782,351,155.35 and 513,505,280.10 is: 770,257,920.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,567,436.90 : 782,351,155.35 = 513,505,280.10 : x
  2. Step 2: Convert to fraction form
    521,567,436.90/782,351,155.35 = 513,505,280.10/x
  3. Step 3: Cross multiply
    521,567,436.90x = 782,351,155.35 × 513,505,280.10
  4. Step 4: Simplify right side
    521,567,436.90x = 401,741,449,164,560,384
  5. Step 5: Solve for x
    x = 401,741,449,164,560,384/521,567,436.90
  6. Step 6: Final answer
    x = 770,257,920.15

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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.