Home / 667,836.25-1,001,743.68-212,420.87

Finding the Fourth Proportional to 667,836.25, 1,001,743.68 and 212,420.87

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Solution

The fourth proportional to 667,836.25, 1,001,743.68 and 212,420.87 is: 318,627.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,836.25 : 1,001,743.68 = 212,420.87 : x
  2. Step 2: Convert to fraction form
    667,836.25/1,001,743.68 = 212,420.87/x
  3. Step 3: Cross multiply
    667,836.25x = 1,001,743.68 × 212,420.87
  4. Step 4: Simplify right side
    667,836.25x = 212,791,264,022.60
  5. Step 5: Solve for x
    x = 212,791,264,022.60/667,836.25
  6. Step 6: Final answer
    x = 318,627.90

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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.