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Finding the Fourth Proportional to 616,709.98, 851,078.47 and 344,789.33

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Solution

The fourth proportional to 616,709.98, 851,078.47 and 344,789.33 is: 475,819.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,709.98 : 851,078.47 = 344,789.33 : x
  2. Step 2: Convert to fraction form
    616,709.98/851,078.47 = 344,789.33/x
  3. Step 3: Cross multiply
    616,709.98x = 851,078.47 × 344,789.33
  4. Step 4: Simplify right side
    616,709.98x = 293,442,775,448.73
  5. Step 5: Solve for x
    x = 293,442,775,448.73/616,709.98
  6. Step 6: Final answer
    x = 475,819.73

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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.