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Finding the Fourth Proportional to 667,611, 1,001,574 and 218,330.10

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Solution

The fourth proportional to 667,611, 1,001,574 and 218,330.10 is: 327,546.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,611 : 1,001,574 = 218,330.10 : x
  2. Step 2: Convert to fraction form
    667,611/1,001,574 = 218,330.10/x
  3. Step 3: Cross multiply
    667,611x = 1,001,574 × 218,330.10
  4. Step 4: Simplify right side
    667,611x = 218,673,751,577.40
  5. Step 5: Solve for x
    x = 218,673,751,577.40/667,611
  6. Step 6: Final answer
    x = 327,546.66

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.