Home / 399,191,112.43-551,422,923.41-300,815,478.43

Finding the Fourth Proportional to 399,191,112.43, 551,422,923.41 and 300,815,478.43

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Solution

The fourth proportional to 399,191,112.43, 551,422,923.41 and 300,815,478.43 is: 415,531,672.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,191,112.43 : 551,422,923.41 = 300,815,478.43 : x
  2. Step 2: Convert to fraction form
    399,191,112.43/551,422,923.41 = 300,815,478.43/x
  3. Step 3: Cross multiply
    399,191,112.43x = 551,422,923.41 × 300,815,478.43
  4. Step 4: Simplify right side
    399,191,112.43x = 165,876,550,522,221,888
  5. Step 5: Solve for x
    x = 165,876,550,522,221,888/399,191,112.43
  6. Step 6: Final answer
    x = 415,531,672.32

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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.