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Finding the Third Proportional to 306,782 and 470,927

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Solution

The third proportional to 306,782 and 470,927 is: 722,898.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,782 : 470,927 = 470,927 : x
  2. Step 2: Convert to fraction form
    306,782/470,927 = 470,927/x
  3. Step 3: Cross multiply
    306,782x = 470,927 × 470,927
  4. Step 4: Simplify right side
    306,782x = 221,772,239,329
  5. Step 5: Solve for x
    x = 221,772,239,329/306,782
  6. Step 6: Final answer
    x = 722,898.47

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.