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Finding the Third Proportional to 291,668 and 456,945

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Solution

The third proportional to 291,668 and 456,945 is: 715,878.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,668 : 456,945 = 456,945 : x
  2. Step 2: Convert to fraction form
    291,668/456,945 = 456,945/x
  3. Step 3: Cross multiply
    291,668x = 456,945 × 456,945
  4. Step 4: Simplify right side
    291,668x = 208,798,733,025
  5. Step 5: Solve for x
    x = 208,798,733,025/291,668
  6. Step 6: Final answer
    x = 715,878.10

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.