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Finding the Fourth Proportional to 666,616, 1,000,028.28 and 217,232.56

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Solution

The fourth proportional to 666,616, 1,000,028.28 and 217,232.56 is: 325,882.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,616 : 1,000,028.28 = 217,232.56 : x
  2. Step 2: Convert to fraction form
    666,616/1,000,028.28 = 217,232.56/x
  3. Step 3: Cross multiply
    666,616x = 1,000,028.28 × 217,232.56
  4. Step 4: Simplify right side
    666,616x = 217,238,703,336.80
  5. Step 5: Solve for x
    x = 217,238,703,336.80/666,616
  6. Step 6: Final answer
    x = 325,882.82

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1.5x scale

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.