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Finding the Fourth Proportional to 918,396,968.80, 1,377,595,453.20 and 918,396,968.80

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Solution

The fourth proportional to 918,396,968.80, 1,377,595,453.20 and 918,396,968.80 is: 1,377,595,453.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,396,968.80 : 1,377,595,453.20 = 918,396,968.80 : x
  2. Step 2: Convert to fraction form
    918,396,968.80/1,377,595,453.20 = 918,396,968.80/x
  3. Step 3: Cross multiply
    918,396,968.80x = 1,377,595,453.20 × 918,396,968.80
  4. Step 4: Simplify right side
    918,396,968.80x = 1,265,179,488,451,542,272
  5. Step 5: Solve for x
    x = 1,265,179,488,451,542,272/918,396,968.80
  6. Step 6: Final answer
    x = 1,377,595,453.20

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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.