Home / 1,420,404.20-1,960,147.80-775,824.56

Finding the Fourth Proportional to 1,420,404.20, 1,960,147.80 and 775,824.56

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Solution

The fourth proportional to 1,420,404.20, 1,960,147.80 and 775,824.56 is: 1,070,632.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,404.20 : 1,960,147.80 = 775,824.56 : x
  2. Step 2: Convert to fraction form
    1,420,404.20/1,960,147.80 = 775,824.56/x
  3. Step 3: Cross multiply
    1,420,404.20x = 1,960,147.80 × 775,824.56
  4. Step 4: Simplify right side
    1,420,404.20x = 1,520,730,804,469.97
  5. Step 5: Solve for x
    x = 1,520,730,804,469.97/1,420,404.20
  6. Step 6: Final answer
    x = 1,070,632.43

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.