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Finding the Third Proportional to 386,446 and 830,038

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Solution

The third proportional to 386,446 and 830,038 is: 1,782,818.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,446 : 830,038 = 830,038 : x
  2. Step 2: Convert to fraction form
    386,446/830,038 = 830,038/x
  3. Step 3: Cross multiply
    386,446x = 830,038 × 830,038
  4. Step 4: Simplify right side
    386,446x = 688,963,081,444
  5. Step 5: Solve for x
    x = 688,963,081,444/386,446
  6. Step 6: Final answer
    x = 1,782,818.51

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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.