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Finding the Third Proportional to 317,486 and 432,357

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Solution

The third proportional to 317,486 and 432,357 is: 588,789.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,486 : 432,357 = 432,357 : x
  2. Step 2: Convert to fraction form
    317,486/432,357 = 432,357/x
  3. Step 3: Cross multiply
    317,486x = 432,357 × 432,357
  4. Step 4: Simplify right side
    317,486x = 186,932,575,449
  5. Step 5: Solve for x
    x = 186,932,575,449/317,486
  6. Step 6: Final answer
    x = 588,789.98

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.