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Finding the Fourth Proportional to 1,159,769.80, 1,738,272.30 and 485,849.80

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Solution

The fourth proportional to 1,159,769.80, 1,738,272.30 and 485,849.80 is: 728,195.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,159,769.80 : 1,738,272.30 = 485,849.80 : x
  2. Step 2: Convert to fraction form
    1,159,769.80/1,738,272.30 = 485,849.80/x
  3. Step 3: Cross multiply
    1,159,769.80x = 1,738,272.30 × 485,849.80
  4. Step 4: Simplify right side
    1,159,769.80x = 844,539,249,300.54
  5. Step 5: Solve for x
    x = 844,539,249,300.54/1,159,769.80
  6. Step 6: Final answer
    x = 728,195.59

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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.