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Finding the Fourth Proportional to 807,755.90, 1,114,659.83 and 445,107.56

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Solution

The fourth proportional to 807,755.90, 1,114,659.83 and 445,107.56 is: 614,224.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    807,755.90 : 1,114,659.83 = 445,107.56 : x
  2. Step 2: Convert to fraction form
    807,755.90/1,114,659.83 = 445,107.56/x
  3. Step 3: Cross multiply
    807,755.90x = 1,114,659.83 × 445,107.56
  4. Step 4: Simplify right side
    807,755.90x = 496,143,512,700.79
  5. Step 5: Solve for x
    x = 496,143,512,700.79/807,755.90
  6. Step 6: Final answer
    x = 614,224.56

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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.