Home / 661,499,720.25-992,399,067.09-218,841,361.84

Finding the Fourth Proportional to 661,499,720.25, 992,399,067.09 and 218,841,361.84

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Solution

The fourth proportional to 661,499,720.25, 992,399,067.09 and 218,841,361.84 is: 328,311,496.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,499,720.25 : 992,399,067.09 = 218,841,361.84 : x
  2. Step 2: Convert to fraction form
    661,499,720.25/992,399,067.09 = 218,841,361.84/x
  3. Step 3: Cross multiply
    661,499,720.25x = 992,399,067.09 × 218,841,361.84
  4. Step 4: Simplify right side
    661,499,720.25x = 217,177,963,333,401,600
  5. Step 5: Solve for x
    x = 217,177,963,333,401,600/661,499,720.25
  6. Step 6: Final answer
    x = 328,311,496.87

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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.