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Finding the Third Proportional to 313,391 and 477,435

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Solution

The third proportional to 313,391 and 477,435 is: 727,347.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,391 : 477,435 = 477,435 : x
  2. Step 2: Convert to fraction form
    313,391/477,435 = 477,435/x
  3. Step 3: Cross multiply
    313,391x = 477,435 × 477,435
  4. Step 4: Simplify right side
    313,391x = 227,944,179,225
  5. Step 5: Solve for x
    x = 227,944,179,225/313,391
  6. Step 6: Final answer
    x = 727,347.56

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.