Home / 379,728,986.40-568,081,825.20-329,172,544.80

Finding the Fourth Proportional to 379,728,986.40, 568,081,825.20 and 329,172,544.80

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Solution

The fourth proportional to 379,728,986.40, 568,081,825.20 and 329,172,544.80 is: 492,448,421.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,728,986.40 : 568,081,825.20 = 329,172,544.80 : x
  2. Step 2: Convert to fraction form
    379,728,986.40/568,081,825.20 = 329,172,544.80/x
  3. Step 3: Cross multiply
    379,728,986.40x = 568,081,825.20 × 329,172,544.80
  4. Step 4: Simplify right side
    379,728,986.40x = 186,996,940,055,712,800
  5. Step 5: Solve for x
    x = 186,996,940,055,712,800/379,728,986.40
  6. Step 6: Final answer
    x = 492,448,421.78

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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.