Home / 3,990,657.20-5,507,129.10-2,179,821.20

Finding the Fourth Proportional to 3,990,657.20, 5,507,129.10 and 2,179,821.20

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Solution

The fourth proportional to 3,990,657.20, 5,507,129.10 and 2,179,821.20 is: 3,008,165.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,990,657.20 : 5,507,129.10 = 2,179,821.20 : x
  2. Step 2: Convert to fraction form
    3,990,657.20/5,507,129.10 = 2,179,821.20/x
  3. Step 3: Cross multiply
    3,990,657.20x = 5,507,129.10 × 2,179,821.20
  4. Step 4: Simplify right side
    3,990,657.20x = 12,004,556,735,781.27
  5. Step 5: Solve for x
    x = 12,004,556,735,781.27/3,990,657.20
  6. Step 6: Final answer
    x = 3,008,165.36

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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.