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Finding the Fourth Proportional to 808,165.16, 1,115,745.78 and 718,493

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Solution

The fourth proportional to 808,165.16, 1,115,745.78 and 718,493 is: 991,945.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,165.16 : 1,115,745.78 = 718,493 : x
  2. Step 2: Convert to fraction form
    808,165.16/1,115,745.78 = 718,493/x
  3. Step 3: Cross multiply
    808,165.16x = 1,115,745.78 × 718,493
  4. Step 4: Simplify right side
    808,165.16x = 801,655,532,709.54
  5. Step 5: Solve for x
    x = 801,655,532,709.54/808,165.16
  6. Step 6: Final answer
    x = 991,945.18

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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.