Home / 401,277,400,881.09-601,972,644,142.55-128,910,320,855.03

Finding the Fourth Proportional to 401,277,400,881.09, 601,972,644,142.55 and 128,910,320,855.03

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Solution

The fourth proportional to 401,277,400,881.09, 601,972,644,142.55 and 128,910,320,855.03 is: 193,383,645,657.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,277,400,881.09 : 601,972,644,142.55 = 128,910,320,855.03 : x
  2. Step 2: Convert to fraction form
    401,277,400,881.09/601,972,644,142.55 = 128,910,320,855.03/x
  3. Step 3: Cross multiply
    401,277,400,881.09x = 601,972,644,142.55 × 128,910,320,855.03
  4. Step 4: Simplify right side
    401,277,400,881.09x = 77,600,486,702,366,918,180,864
  5. Step 5: Solve for x
    x = 77,600,486,702,366,918,180,864/401,277,400,881.09
  6. Step 6: Final answer
    x = 193,383,645,657.54

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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.