Home / 2,129,912.85-3,194,287.36-763,431.86

Finding the Fourth Proportional to 2,129,912.85, 3,194,287.36 and 763,431.86

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Solution

The fourth proportional to 2,129,912.85, 3,194,287.36 and 763,431.86 is: 1,144,939.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129,912.85 : 3,194,287.36 = 763,431.86 : x
  2. Step 2: Convert to fraction form
    2,129,912.85/3,194,287.36 = 763,431.86/x
  3. Step 3: Cross multiply
    2,129,912.85x = 3,194,287.36 × 763,431.86
  4. Step 4: Simplify right side
    2,129,912.85x = 2,438,620,749,559.30
  5. Step 5: Solve for x
    x = 2,438,620,749,559.30/2,129,912.85
  6. Step 6: Final answer
    x = 1,144,939.21

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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.