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Finding the Third Proportional to 311,528 and 682,024

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Solution

The third proportional to 311,528 and 682,024 is: 1,493,145.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,528 : 682,024 = 682,024 : x
  2. Step 2: Convert to fraction form
    311,528/682,024 = 682,024/x
  3. Step 3: Cross multiply
    311,528x = 682,024 × 682,024
  4. Step 4: Simplify right side
    311,528x = 465,156,736,576
  5. Step 5: Solve for x
    x = 465,156,736,576/311,528
  6. Step 6: Final answer
    x = 1,493,145.84

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.