Home / 667,915.38-1,002,201.63-312,868.02

Finding the Fourth Proportional to 667,915.38, 1,002,201.63 and 312,868.02

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Solution

The fourth proportional to 667,915.38, 1,002,201.63 and 312,868.02 is: 469,455.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,915.38 : 1,002,201.63 = 312,868.02 : x
  2. Step 2: Convert to fraction form
    667,915.38/1,002,201.63 = 312,868.02/x
  3. Step 3: Cross multiply
    667,915.38x = 1,002,201.63 × 312,868.02
  4. Step 4: Simplify right side
    667,915.38x = 313,556,839,618.87
  5. Step 5: Solve for x
    x = 313,556,839,618.87/667,915.38
  6. Step 6: Final answer
    x = 469,455.94

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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.