Home / 1,296,820.80-1,945,231.11-665,331.84

Finding the Fourth Proportional to 1,296,820.80, 1,945,231.11 and 665,331.84

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Solution

The fourth proportional to 1,296,820.80, 1,945,231.11 and 665,331.84 is: 997,997.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,296,820.80 : 1,945,231.11 = 665,331.84 : x
  2. Step 2: Convert to fraction form
    1,296,820.80/1,945,231.11 = 665,331.84/x
  3. Step 3: Cross multiply
    1,296,820.80x = 1,945,231.11 × 665,331.84
  4. Step 4: Simplify right side
    1,296,820.80x = 1,294,224,193,641.54
  5. Step 5: Solve for x
    x = 1,294,224,193,641.54/1,296,820.80
  6. Step 6: Final answer
    x = 997,997.71

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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.