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Finding the Third Proportional to 295,430 and 644,329

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Solution

The third proportional to 295,430 and 644,329 is: 1,405,273.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,430 : 644,329 = 644,329 : x
  2. Step 2: Convert to fraction form
    295,430/644,329 = 644,329/x
  3. Step 3: Cross multiply
    295,430x = 644,329 × 644,329
  4. Step 4: Simplify right side
    295,430x = 415,159,860,241
  5. Step 5: Solve for x
    x = 415,159,860,241/295,430
  6. Step 6: Final answer
    x = 1,405,273.20

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.