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Finding the Fourth Proportional to 2,651,593,232.67, 3,978,065,443.38 and 786,307,067.21

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Solution

The fourth proportional to 2,651,593,232.67, 3,978,065,443.38 and 786,307,067.21 is: 1,179,660,942.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651,593,232.67 : 3,978,065,443.38 = 786,307,067.21 : x
  2. Step 2: Convert to fraction form
    2,651,593,232.67/3,978,065,443.38 = 786,307,067.21/x
  3. Step 3: Cross multiply
    2,651,593,232.67x = 3,978,065,443.38 × 786,307,067.21
  4. Step 4: Simplify right side
    2,651,593,232.67x = 3,127,980,971,940,338,688
  5. Step 5: Solve for x
    x = 3,127,980,971,940,338,688/2,651,593,232.67
  6. Step 6: Final answer
    x = 1,179,660,942.48

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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.