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Finding the Fourth Proportional to 880,662.80, 1,215,603.24 and 518,067.92

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Solution

The fourth proportional to 880,662.80, 1,215,603.24 and 518,067.92 is: 715,103.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,662.80 : 1,215,603.24 = 518,067.92 : x
  2. Step 2: Convert to fraction form
    880,662.80/1,215,603.24 = 518,067.92/x
  3. Step 3: Cross multiply
    880,662.80x = 1,215,603.24 × 518,067.92
  4. Step 4: Simplify right side
    880,662.80x = 629,765,042,092.06
  5. Step 5: Solve for x
    x = 629,765,042,092.06/880,662.80
  6. Step 6: Final answer
    x = 715,103.49

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1.5x scale

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.