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Finding the Fourth Proportional to 436,107.60, 655,619.40 and 378,370.80

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Solution

The fourth proportional to 436,107.60, 655,619.40 and 378,370.80 is: 568,821.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,107.60 : 655,619.40 = 378,370.80 : x
  2. Step 2: Convert to fraction form
    436,107.60/655,619.40 = 378,370.80/x
  3. Step 3: Cross multiply
    436,107.60x = 655,619.40 × 378,370.80
  4. Step 4: Simplify right side
    436,107.60x = 248,067,236,873.52
  5. Step 5: Solve for x
    x = 248,067,236,873.52/436,107.60
  6. Step 6: Final answer
    x = 568,821.17

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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.