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Finding the Fourth Proportional to 2,783,431,978.80, 4,175,147,968.20 and 2,783,431,978.80

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Solution

The fourth proportional to 2,783,431,978.80, 4,175,147,968.20 and 2,783,431,978.80 is: 4,175,147,968.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,783,431,978.80 : 4,175,147,968.20 = 2,783,431,978.80 : x
  2. Step 2: Convert to fraction form
    2,783,431,978.80/4,175,147,968.20 = 2,783,431,978.80/x
  3. Step 3: Cross multiply
    2,783,431,978.80x = 4,175,147,968.20 × 2,783,431,978.80
  4. Step 4: Simplify right side
    2,783,431,978.80x = 11,621,240,370,909,726,720
  5. Step 5: Solve for x
    x = 11,621,240,370,909,726,720/2,783,431,978.80
  6. Step 6: Final answer
    x = 4,175,147,968.20

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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.