Home / 721,129.80-1,081,871.82-247,821.96

Finding the Fourth Proportional to 721,129.80, 1,081,871.82 and 247,821.96

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Solution

The fourth proportional to 721,129.80, 1,081,871.82 and 247,821.96 is: 371,793.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,129.80 : 1,081,871.82 = 247,821.96 : x
  2. Step 2: Convert to fraction form
    721,129.80/1,081,871.82 = 247,821.96/x
  3. Step 3: Cross multiply
    721,129.80x = 1,081,871.82 × 247,821.96
  4. Step 4: Simplify right side
    721,129.80x = 268,111,594,901.17
  5. Step 5: Solve for x
    x = 268,111,594,901.17/721,129.80
  6. Step 6: Final answer
    x = 371,793.81

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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.