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Finding the Fourth Proportional to 2,651,971.92, 3,977,996.76 and 758,716.80

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Solution

The fourth proportional to 2,651,971.92, 3,977,996.76 and 758,716.80 is: 1,138,086.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,651,971.92 : 3,977,996.76 = 758,716.80 : x
  2. Step 2: Convert to fraction form
    2,651,971.92/3,977,996.76 = 758,716.80/x
  3. Step 3: Cross multiply
    2,651,971.92x = 3,977,996.76 × 758,716.80
  4. Step 4: Simplify right side
    2,651,971.92x = 3,018,172,972,157.57
  5. Step 5: Solve for x
    x = 3,018,172,972,157.57/2,651,971.92
  6. Step 6: Final answer
    x = 1,138,086.32

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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.