Home / 12,780,213.20-19,163,321.40-5,198,613.20

Finding the Fourth Proportional to 12,780,213.20, 19,163,321.40 and 5,198,613.20

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Solution

The fourth proportional to 12,780,213.20, 19,163,321.40 and 5,198,613.20 is: 7,795,073.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,780,213.20 : 19,163,321.40 = 5,198,613.20 : x
  2. Step 2: Convert to fraction form
    12,780,213.20/19,163,321.40 = 5,198,613.20/x
  3. Step 3: Cross multiply
    12,780,213.20x = 19,163,321.40 × 5,198,613.20
  4. Step 4: Simplify right side
    12,780,213.20x = 99,622,695,585,882.47
  5. Step 5: Solve for x
    x = 99,622,695,585,882.47/12,780,213.20
  6. Step 6: Final answer
    x = 7,795,073.06

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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.