Home / 1,086,643.20-1,629,316.80-666,220.80

Finding the Fourth Proportional to 1,086,643.20, 1,629,316.80 and 666,220.80

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Solution

The fourth proportional to 1,086,643.20, 1,629,316.80 and 666,220.80 is: 998,933.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,086,643.20 : 1,629,316.80 = 666,220.80 : x
  2. Step 2: Convert to fraction form
    1,086,643.20/1,629,316.80 = 666,220.80/x
  3. Step 3: Cross multiply
    1,086,643.20x = 1,629,316.80 × 666,220.80
  4. Step 4: Simplify right side
    1,086,643.20x = 1,085,484,741,949.44
  5. Step 5: Solve for x
    x = 1,085,484,741,949.44/1,086,643.20
  6. Step 6: Final answer
    x = 998,933.91

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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.