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Finding the Fourth Proportional to 662,399,287.68, 914,084,403.19 and 360,978,198.58

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Solution

The fourth proportional to 662,399,287.68, 914,084,403.19 and 360,978,198.58 is: 498,135,410.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,399,287.68 : 914,084,403.19 = 360,978,198.58 : x
  2. Step 2: Convert to fraction form
    662,399,287.68/914,084,403.19 = 360,978,198.58/x
  3. Step 3: Cross multiply
    662,399,287.68x = 914,084,403.19 × 360,978,198.58
  4. Step 4: Simplify right side
    662,399,287.68x = 329,964,541,212,300,992
  5. Step 5: Solve for x
    x = 329,964,541,212,300,992/662,399,287.68
  6. Step 6: Final answer
    x = 498,135,410.69

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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.