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Finding the Fourth Proportional to 644,166.12, 888,974.82 and 372,225

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Solution

The fourth proportional to 644,166.12, 888,974.82 and 372,225 is: 513,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,166.12 : 888,974.82 = 372,225 : x
  2. Step 2: Convert to fraction form
    644,166.12/888,974.82 = 372,225/x
  3. Step 3: Cross multiply
    644,166.12x = 888,974.82 × 372,225
  4. Step 4: Simplify right side
    644,166.12x = 330,898,652,374.50
  5. Step 5: Solve for x
    x = 330,898,652,374.50/644,166.12
  6. Step 6: Final answer
    x = 513,685.28

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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.