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Finding the Fourth Proportional to 6,648,974.80, 9,969,775.80 and 2,861,813.20

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Solution

The fourth proportional to 6,648,974.80, 9,969,775.80 and 2,861,813.20 is: 4,291,133.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,648,974.80 : 9,969,775.80 = 2,861,813.20 : x
  2. Step 2: Convert to fraction form
    6,648,974.80/9,969,775.80 = 2,861,813.20/x
  3. Step 3: Cross multiply
    6,648,974.80x = 9,969,775.80 × 2,861,813.20
  4. Step 4: Simplify right side
    6,648,974.80x = 28,531,635,985,480.56
  5. Step 5: Solve for x
    x = 28,531,635,985,480.56/6,648,974.80
  6. Step 6: Final answer
    x = 4,291,133.12

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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.