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Finding the Fourth Proportional to 6,642,496.80, 9,968,410.80 and 2,858,695.20

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Solution

The fourth proportional to 6,642,496.80, 9,968,410.80 and 2,858,695.20 is: 4,290,050.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642,496.80 : 9,968,410.80 = 2,858,695.20 : x
  2. Step 2: Convert to fraction form
    6,642,496.80/9,968,410.80 = 2,858,695.20/x
  3. Step 3: Cross multiply
    6,642,496.80x = 9,968,410.80 × 2,858,695.20
  4. Step 4: Simplify right side
    6,642,496.80x = 28,496,648,105,588.16
  5. Step 5: Solve for x
    x = 28,496,648,105,588.16/6,642,496.80
  6. Step 6: Final answer
    x = 4,290,050.71

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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.