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Finding the Third Proportional to 389,646 and 839,484

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Solution

The third proportional to 389,646 and 839,484 is: 1,808,650.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,646 : 839,484 = 839,484 : x
  2. Step 2: Convert to fraction form
    389,646/839,484 = 839,484/x
  3. Step 3: Cross multiply
    389,646x = 839,484 × 839,484
  4. Step 4: Simplify right side
    389,646x = 704,733,386,256
  5. Step 5: Solve for x
    x = 704,733,386,256/389,646
  6. Step 6: Final answer
    x = 1,808,650.38

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.