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Finding the Fourth Proportional to 6,343,993.67, 8,754,720.12 and 3,443,385.20

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Solution

The fourth proportional to 6,343,993.67, 8,754,720.12 and 3,443,385.20 is: 4,751,876.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,343,993.67 : 8,754,720.12 = 3,443,385.20 : x
  2. Step 2: Convert to fraction form
    6,343,993.67/8,754,720.12 = 3,443,385.20/x
  3. Step 3: Cross multiply
    6,343,993.67x = 8,754,720.12 × 3,443,385.20
  4. Step 4: Simplify right side
    6,343,993.67x = 30,145,873,647,576.62
  5. Step 5: Solve for x
    x = 30,145,873,647,576.62/6,343,993.67
  6. Step 6: Final answer
    x = 4,751,876.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.