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Finding the Third Proportional to 291,072 and 636,246

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Solution

The third proportional to 291,072 and 636,246 is: 1,390,752.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,072 : 636,246 = 636,246 : x
  2. Step 2: Convert to fraction form
    291,072/636,246 = 636,246/x
  3. Step 3: Cross multiply
    291,072x = 636,246 × 636,246
  4. Step 4: Simplify right side
    291,072x = 404,808,972,516
  5. Step 5: Solve for x
    x = 404,808,972,516/291,072
  6. Step 6: Final answer
    x = 1,390,752.02

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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.