Home / 720,809,100,448.45-994,717,543,654.05-391,212,143,696.97

Finding the Fourth Proportional to 720,809,100,448.45, 994,717,543,654.05 and 391,212,143,696.97

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Solution

The fourth proportional to 720,809,100,448.45, 994,717,543,654.05 and 391,212,143,696.97 is: 539,873,292,920.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,809,100,448.45 : 994,717,543,654.05 = 391,212,143,696.97 : x
  2. Step 2: Convert to fraction form
    720,809,100,448.45/994,717,543,654.05 = 391,212,143,696.97/x
  3. Step 3: Cross multiply
    720,809,100,448.45x = 994,717,543,654.05 × 391,212,143,696.97
  4. Step 4: Simplify right side
    720,809,100,448.45x = 389,145,582,625,885,249,339,392
  5. Step 5: Solve for x
    x = 389,145,582,625,885,249,339,392/720,809,100,448.45
  6. Step 6: Final answer
    x = 539,873,292,920.11

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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.