Home / 419,904,987.60-629,857,481.40-393,031,131.60

Finding the Fourth Proportional to 419,904,987.60, 629,857,481.40 and 393,031,131.60

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Solution

The fourth proportional to 419,904,987.60, 629,857,481.40 and 393,031,131.60 is: 589,546,697.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,987.60 : 629,857,481.40 = 393,031,131.60 : x
  2. Step 2: Convert to fraction form
    419,904,987.60/629,857,481.40 = 393,031,131.60/x
  3. Step 3: Cross multiply
    419,904,987.60x = 629,857,481.40 × 393,031,131.60
  4. Step 4: Simplify right side
    419,904,987.60x = 247,553,598,661,367,968
  5. Step 5: Solve for x
    x = 247,553,598,661,367,968/419,904,987.60
  6. Step 6: Final answer
    x = 589,546,697.40

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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.