Home / 1,326,976.75-1,991,221.11-517,255.80

Finding the Fourth Proportional to 1,326,976.75, 1,991,221.11 and 517,255.80

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Solution

The fourth proportional to 1,326,976.75, 1,991,221.11 and 517,255.80 is: 776,178.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,326,976.75 : 1,991,221.11 = 517,255.80 : x
  2. Step 2: Convert to fraction form
    1,326,976.75/1,991,221.11 = 517,255.80/x
  3. Step 3: Cross multiply
    1,326,976.75x = 1,991,221.11 × 517,255.80
  4. Step 4: Simplify right side
    1,326,976.75x = 1,029,970,655,687.55
  5. Step 5: Solve for x
    x = 1,029,970,655,687.55/1,326,976.75
  6. Step 6: Final answer
    x = 776,178.37

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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.