Home / 2,115,997.20-3,173,995.80-1,120,669.20

Finding the Fourth Proportional to 2,115,997.20, 3,173,995.80 and 1,120,669.20

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Solution

The fourth proportional to 2,115,997.20, 3,173,995.80 and 1,120,669.20 is: 1,681,003.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,115,997.20 : 3,173,995.80 = 1,120,669.20 : x
  2. Step 2: Convert to fraction form
    2,115,997.20/3,173,995.80 = 1,120,669.20/x
  3. Step 3: Cross multiply
    2,115,997.20x = 3,173,995.80 × 1,120,669.20
  4. Step 4: Simplify right side
    2,115,997.20x = 3,556,999,333,989.36
  5. Step 5: Solve for x
    x = 3,556,999,333,989.36/2,115,997.20
  6. Step 6: Final answer
    x = 1,681,003.80

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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.