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Finding the Third Proportional to 312,929 and 470,852

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Solution

The third proportional to 312,929 and 470,852 is: 708,472.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,929 : 470,852 = 470,852 : x
  2. Step 2: Convert to fraction form
    312,929/470,852 = 470,852/x
  3. Step 3: Cross multiply
    312,929x = 470,852 × 470,852
  4. Step 4: Simplify right side
    312,929x = 221,701,605,904
  5. Step 5: Solve for x
    x = 221,701,605,904/312,929
  6. Step 6: Final answer
    x = 708,472.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.