Home / 13,379,563,338.38-18,458,571,900.79-7,660,791,691.28

Finding the Fourth Proportional to 13,379,563,338.38, 18,458,571,900.79 and 7,660,791,691.28

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Solution

The fourth proportional to 13,379,563,338.38, 18,458,571,900.79 and 7,660,791,691.28 is: 10,568,900,544.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,379,563,338.38 : 18,458,571,900.79 = 7,660,791,691.28 : x
  2. Step 2: Convert to fraction form
    13,379,563,338.38/18,458,571,900.79 = 7,660,791,691.28/x
  3. Step 3: Cross multiply
    13,379,563,338.38x = 18,458,571,900.79 × 7,660,791,691.28
  4. Step 4: Simplify right side
    13,379,563,338.38x = 141,407,274,250,351,214,592
  5. Step 5: Solve for x
    x = 141,407,274,250,351,214,592/13,379,563,338.38
  6. Step 6: Final answer
    x = 10,568,900,544.37

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1.5x scale

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.