Home / 667,110.64-1,000,721.09-217,821.55

Finding the Fourth Proportional to 667,110.64, 1,000,721.09 and 217,821.55

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Solution

The fourth proportional to 667,110.64, 1,000,721.09 and 217,821.55 is: 326,750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,110.64 : 1,000,721.09 = 217,821.55 : x
  2. Step 2: Convert to fraction form
    667,110.64/1,000,721.09 = 217,821.55/x
  3. Step 3: Cross multiply
    667,110.64x = 1,000,721.09 × 217,821.55
  4. Step 4: Simplify right side
    667,110.64x = 217,978,618,941.49
  5. Step 5: Solve for x
    x = 217,978,618,941.49/667,110.64
  6. Step 6: Final answer
    x = 326,750.33

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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.