Home / 671,687.40-1,007,396.38-329,988.20

Finding the Fourth Proportional to 671,687.40, 1,007,396.38 and 329,988.20

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Solution

The fourth proportional to 671,687.40, 1,007,396.38 and 329,988.20 is: 494,916.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,687.40 : 1,007,396.38 = 329,988.20 : x
  2. Step 2: Convert to fraction form
    671,687.40/1,007,396.38 = 329,988.20/x
  3. Step 3: Cross multiply
    671,687.40x = 1,007,396.38 × 329,988.20
  4. Step 4: Simplify right side
    671,687.40x = 332,428,918,122.72
  5. Step 5: Solve for x
    x = 332,428,918,122.72/671,687.40
  6. Step 6: Final answer
    x = 494,916.11

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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.