Home / 815,584,918,915.90-1,223,040,787,732.30-278,406,147,007.48

Finding the Fourth Proportional to 815,584,918,915.90, 1,223,040,787,732.30 and 278,406,147,007.48

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Solution

The fourth proportional to 815,584,918,915.90, 1,223,040,787,732.30 and 278,406,147,007.48 is: 417,494,322,722.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,584,918,915.90 : 1,223,040,787,732.30 = 278,406,147,007.48 : x
  2. Step 2: Convert to fraction form
    815,584,918,915.90/1,223,040,787,732.30 = 278,406,147,007.48/x
  3. Step 3: Cross multiply
    815,584,918,915.90x = 1,223,040,787,732.30 × 278,406,147,007.48
  4. Step 4: Simplify right side
    815,584,918,915.90x = 340,502,073,345,542,816,006,144
  5. Step 5: Solve for x
    x = 340,502,073,345,542,816,006,144/815,584,918,915.90
  6. Step 6: Final answer
    x = 417,494,322,722.58

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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.