Home / 815,584,918,917.90-1,223,040,787,735.30-278,406,147,009.48

Finding the Fourth Proportional to 815,584,918,917.90, 1,223,040,787,735.30 and 278,406,147,009.48

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Solution

The fourth proportional to 815,584,918,917.90, 1,223,040,787,735.30 and 278,406,147,009.48 is: 417,494,322,725.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,584,918,917.90 : 1,223,040,787,735.30 = 278,406,147,009.48 : x
  2. Step 2: Convert to fraction form
    815,584,918,917.90/1,223,040,787,735.30 = 278,406,147,009.48/x
  3. Step 3: Cross multiply
    815,584,918,917.90x = 1,223,040,787,735.30 × 278,406,147,009.48
  4. Step 4: Simplify right side
    815,584,918,917.90x = 340,502,073,348,824,171,020,288
  5. Step 5: Solve for x
    x = 340,502,073,348,824,171,020,288/815,584,918,917.90
  6. Step 6: Final answer
    x = 417,494,322,725.58

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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.