Home / 393,198,301,448.38-589,824,087,341.48-138,196,682,761.72

Finding the Fourth Proportional to 393,198,301,448.38, 589,824,087,341.48 and 138,196,682,761.72

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Solution

The fourth proportional to 393,198,301,448.38, 589,824,087,341.48 and 138,196,682,761.72 is: 207,304,385,556.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,198,301,448.38 : 589,824,087,341.48 = 138,196,682,761.72 : x
  2. Step 2: Convert to fraction form
    393,198,301,448.38/589,824,087,341.48 = 138,196,682,761.72/x
  3. Step 3: Cross multiply
    393,198,301,448.38x = 589,824,087,341.48 × 138,196,682,761.72
  4. Step 4: Simplify right side
    393,198,301,448.38x = 81,511,732,283,551,546,081,280
  5. Step 5: Solve for x
    x = 81,511,732,283,551,546,081,280/393,198,301,448.38
  6. Step 6: Final answer
    x = 207,304,385,556.34

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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.