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Finding the Fourth Proportional to 667,634.03, 921,335.86 and 361,710.43

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Solution

The fourth proportional to 667,634.03, 921,335.86 and 361,710.43 is: 499,160.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,634.03 : 921,335.86 = 361,710.43 : x
  2. Step 2: Convert to fraction form
    667,634.03/921,335.86 = 361,710.43/x
  3. Step 3: Cross multiply
    667,634.03x = 921,335.86 × 361,710.43
  4. Step 4: Simplify right side
    667,634.03x = 333,256,788,059.67
  5. Step 5: Solve for x
    x = 333,256,788,059.67/667,634.03
  6. Step 6: Final answer
    x = 499,160.87

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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.