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Finding the Fourth Proportional to 666,802,828.22, 999,670,144.13 and 316,873,287.44

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Solution

The fourth proportional to 666,802,828.22, 999,670,144.13 and 316,873,287.44 is: 475,056,120.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,802,828.22 : 999,670,144.13 = 316,873,287.44 : x
  2. Step 2: Convert to fraction form
    666,802,828.22/999,670,144.13 = 316,873,287.44/x
  3. Step 3: Cross multiply
    666,802,828.22x = 999,670,144.13 × 316,873,287.44
  4. Step 4: Simplify right side
    666,802,828.22x = 316,768,764,919,508,992
  5. Step 5: Solve for x
    x = 316,768,764,919,508,992/666,802,828.22
  6. Step 6: Final answer
    x = 475,056,120.81

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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.