Home / 638,906,082,997.29-958,418,039,144.10-208,645,422,717.96

Finding the Fourth Proportional to 638,906,082,997.29, 958,418,039,144.10 and 208,645,422,717.96

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Solution

The fourth proportional to 638,906,082,997.29, 958,418,039,144.10 and 208,645,422,717.96 is: 312,987,373,636.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,906,082,997.29 : 958,418,039,144.10 = 208,645,422,717.96 : x
  2. Step 2: Convert to fraction form
    638,906,082,997.29/958,418,039,144.10 = 208,645,422,717.96/x
  3. Step 3: Cross multiply
    638,906,082,997.29x = 958,418,039,144.10 × 208,645,422,717.96
  4. Step 4: Simplify right side
    638,906,082,997.29x = 199,969,536,917,739,057,184,768
  5. Step 5: Solve for x
    x = 199,969,536,917,739,057,184,768/638,906,082,997.29
  6. Step 6: Final answer
    x = 312,987,373,636.55

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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.