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Finding the Fourth Proportional to 1,348,652,013.20, 2,022,978,019.80 and 379,303,629.20

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Solution

The fourth proportional to 1,348,652,013.20, 2,022,978,019.80 and 379,303,629.20 is: 568,955,443.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,348,652,013.20 : 2,022,978,019.80 = 379,303,629.20 : x
  2. Step 2: Convert to fraction form
    1,348,652,013.20/2,022,978,019.80 = 379,303,629.20/x
  3. Step 3: Cross multiply
    1,348,652,013.20x = 2,022,978,019.80 × 379,303,629.20
  4. Step 4: Simplify right side
    1,348,652,013.20x = 767,322,904,701,969,408
  5. Step 5: Solve for x
    x = 767,322,904,701,969,408/1,348,652,013.20
  6. Step 6: Final answer
    x = 568,955,443.80

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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.