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Finding the Third Proportional to 284,938 and 439,742

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Solution

The third proportional to 284,938 and 439,742 is: 678,649.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,938 : 439,742 = 439,742 : x
  2. Step 2: Convert to fraction form
    284,938/439,742 = 439,742/x
  3. Step 3: Cross multiply
    284,938x = 439,742 × 439,742
  4. Step 4: Simplify right side
    284,938x = 193,373,026,564
  5. Step 5: Solve for x
    x = 193,373,026,564/284,938
  6. Step 6: Final answer
    x = 678,649.48

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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.