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Finding the Fourth Proportional to 618,891.16, 928,115.16 and 334,791.76

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Solution

The fourth proportional to 618,891.16, 928,115.16 and 334,791.76 is: 502,067.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    618,891.16 : 928,115.16 = 334,791.76 : x
  2. Step 2: Convert to fraction form
    618,891.16/928,115.16 = 334,791.76/x
  3. Step 3: Cross multiply
    618,891.16x = 928,115.16 × 334,791.76
  4. Step 4: Simplify right side
    618,891.16x = 310,725,307,899.08
  5. Step 5: Solve for x
    x = 310,725,307,899.08/618,891.16
  6. Step 6: Final answer
    x = 502,067.78

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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.