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Finding the Fourth Proportional to 1,259,713,375.80, 1,889,570,063.70 and 339,682,716.60

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Solution

The fourth proportional to 1,259,713,375.80, 1,889,570,063.70 and 339,682,716.60 is: 509,524,074.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,259,713,375.80 : 1,889,570,063.70 = 339,682,716.60 : x
  2. Step 2: Convert to fraction form
    1,259,713,375.80/1,889,570,063.70 = 339,682,716.60/x
  3. Step 3: Cross multiply
    1,259,713,375.80x = 1,889,570,063.70 × 339,682,716.60
  4. Step 4: Simplify right side
    1,259,713,375.80x = 641,854,292,443,651,072
  5. Step 5: Solve for x
    x = 641,854,292,443,651,072/1,259,713,375.80
  6. Step 6: Final answer
    x = 509,524,074.90

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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.