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Finding the Fourth Proportional to 644,167.96, 888,934.56 and 357,680.68

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Solution

The fourth proportional to 644,167.96, 888,934.56 and 357,680.68 is: 493,589.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,167.96 : 888,934.56 = 357,680.68 : x
  2. Step 2: Convert to fraction form
    644,167.96/888,934.56 = 357,680.68/x
  3. Step 3: Cross multiply
    644,167.96x = 888,934.56 × 357,680.68
  4. Step 4: Simplify right side
    644,167.96x = 317,954,717,896.30
  5. Step 5: Solve for x
    x = 317,954,717,896.30/644,167.96
  6. Step 6: Final answer
    x = 493,589.77

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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.