Home / 13,431,777,896.80-20,147,666,845.20-6,440,990,406.40

Finding the Fourth Proportional to 13,431,777,896.80, 20,147,666,845.20 and 6,440,990,406.40

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Solution

The fourth proportional to 13,431,777,896.80, 20,147,666,845.20 and 6,440,990,406.40 is: 9,661,485,609.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,431,777,896.80 : 20,147,666,845.20 = 6,440,990,406.40 : x
  2. Step 2: Convert to fraction form
    13,431,777,896.80/20,147,666,845.20 = 6,440,990,406.40/x
  3. Step 3: Cross multiply
    13,431,777,896.80x = 20,147,666,845.20 × 6,440,990,406.40
  4. Step 4: Simplify right side
    13,431,777,896.80x = 129,770,928,861,276,553,216
  5. Step 5: Solve for x
    x = 129,770,928,861,276,553,216/13,431,777,896.80
  6. Step 6: Final answer
    x = 9,661,485,609.60

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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.