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Finding the Fourth Proportional to 641,551, 885,573.68 and 373,279

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Solution

The fourth proportional to 641,551, 885,573.68 and 373,279 is: 515,260.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,551 : 885,573.68 = 373,279 : x
  2. Step 2: Convert to fraction form
    641,551/885,573.68 = 373,279/x
  3. Step 3: Cross multiply
    641,551x = 885,573.68 × 373,279
  4. Step 4: Simplify right side
    641,551x = 330,566,057,696.72
  5. Step 5: Solve for x
    x = 330,566,057,696.72/641,551
  6. Step 6: Final answer
    x = 515,260.76

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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.