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Finding the Third Proportional to 389,520 and 586,843

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Solution

The third proportional to 389,520 and 586,843 is: 884,125.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,520 : 586,843 = 586,843 : x
  2. Step 2: Convert to fraction form
    389,520/586,843 = 586,843/x
  3. Step 3: Cross multiply
    389,520x = 586,843 × 586,843
  4. Step 4: Simplify right side
    389,520x = 344,384,706,649
  5. Step 5: Solve for x
    x = 344,384,706,649/389,520
  6. Step 6: Final answer
    x = 884,125.86

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.