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Finding the Third Proportional to 358,336 and 517,988

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Solution

The third proportional to 358,336 and 517,988 is: 748,770.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    358,336 : 517,988 = 517,988 : x
  2. Step 2: Convert to fraction form
    358,336/517,988 = 517,988/x
  3. Step 3: Cross multiply
    358,336x = 517,988 × 517,988
  4. Step 4: Simplify right side
    358,336x = 268,311,568,144
  5. Step 5: Solve for x
    x = 268,311,568,144/358,336
  6. Step 6: Final answer
    x = 748,770.90

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Why These Related Problems?

These problems maintain the same ratio (1.45) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.