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Finding the Third Proportional to 336,318 and 499,686

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Solution

The third proportional to 336,318 and 499,686 is: 742,410.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    336,318 : 499,686 = 499,686 : x
  2. Step 2: Convert to fraction form
    336,318/499,686 = 499,686/x
  3. Step 3: Cross multiply
    336,318x = 499,686 × 499,686
  4. Step 4: Simplify right side
    336,318x = 249,686,098,596
  5. Step 5: Solve for x
    x = 249,686,098,596/336,318
  6. Step 6: Final answer
    x = 742,410.75

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.