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Finding the Fourth Proportional to 1,728,566.80, 2,589,739.80 and 1,479,734.80

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Solution

The fourth proportional to 1,728,566.80, 2,589,739.80 and 1,479,734.80 is: 2,216,939.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,728,566.80 : 2,589,739.80 = 1,479,734.80 : x
  2. Step 2: Convert to fraction form
    1,728,566.80/2,589,739.80 = 1,479,734.80/x
  3. Step 3: Cross multiply
    1,728,566.80x = 2,589,739.80 × 1,479,734.80
  4. Step 4: Simplify right side
    1,728,566.80x = 3,832,128,105,005.04
  5. Step 5: Solve for x
    x = 3,832,128,105,005.04/1,728,566.80
  6. Step 6: Final answer
    x = 2,216,939.55

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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.