Home / 1,215,896.80-1,821,080.40-767,999.20

Finding the Fourth Proportional to 1,215,896.80, 1,821,080.40 and 767,999.20

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Solution

The fourth proportional to 1,215,896.80, 1,821,080.40 and 767,999.20 is: 1,150,252.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,215,896.80 : 1,821,080.40 = 767,999.20 : x
  2. Step 2: Convert to fraction form
    1,215,896.80/1,821,080.40 = 767,999.20/x
  3. Step 3: Cross multiply
    1,215,896.80x = 1,821,080.40 × 767,999.20
  4. Step 4: Simplify right side
    1,215,896.80x = 1,398,588,290,335.68
  5. Step 5: Solve for x
    x = 1,398,588,290,335.68/1,215,896.80
  6. Step 6: Final answer
    x = 1,150,252.46

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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.