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Finding the Fourth Proportional to 1,080,819.71, 1,619,918.67 and 793,849.37

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Solution

The fourth proportional to 1,080,819.71, 1,619,918.67 and 793,849.37 is: 1,189,811.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,080,819.71 : 1,619,918.67 = 793,849.37 : x
  2. Step 2: Convert to fraction form
    1,080,819.71/1,619,918.67 = 793,849.37/x
  3. Step 3: Cross multiply
    1,080,819.71x = 1,619,918.67 × 793,849.37
  4. Step 4: Simplify right side
    1,080,819.71x = 1,285,971,415,630.74
  5. Step 5: Solve for x
    x = 1,285,971,415,630.74/1,080,819.71
  6. Step 6: Final answer
    x = 1,189,811.22

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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.