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Finding the Third Proportional to 399,579 and 850,011

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Solution

The third proportional to 399,579 and 850,011 is: 1,808,199.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,579 : 850,011 = 850,011 : x
  2. Step 2: Convert to fraction form
    399,579/850,011 = 850,011/x
  3. Step 3: Cross multiply
    399,579x = 850,011 × 850,011
  4. Step 4: Simplify right side
    399,579x = 722,518,700,121
  5. Step 5: Solve for x
    x = 722,518,700,121/399,579
  6. Step 6: Final answer
    x = 1,808,199.88

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Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.