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Finding the Fourth Proportional to 1,777,987.20, 2,668,147.20 and 1,019,827.20

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Solution

The fourth proportional to 1,777,987.20, 2,668,147.20 and 1,019,827.20 is: 1,530,409.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,777,987.20 : 2,668,147.20 = 1,019,827.20 : x
  2. Step 2: Convert to fraction form
    1,777,987.20/2,668,147.20 = 1,019,827.20/x
  3. Step 3: Cross multiply
    1,777,987.20x = 2,668,147.20 × 1,019,827.20
  4. Step 4: Simplify right side
    1,777,987.20x = 2,721,049,088,163.84
  5. Step 5: Solve for x
    x = 2,721,049,088,163.84/1,777,987.20
  6. Step 6: Final answer
    x = 1,530,409.83

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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.