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Finding the Third Proportional to 407,210 and 876,856

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Solution

The third proportional to 407,210 and 876,856 is: 1,888,157.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,210 : 876,856 = 876,856 : x
  2. Step 2: Convert to fraction form
    407,210/876,856 = 876,856/x
  3. Step 3: Cross multiply
    407,210x = 876,856 × 876,856
  4. Step 4: Simplify right side
    407,210x = 768,876,444,736
  5. Step 5: Solve for x
    x = 768,876,444,736/407,210
  6. Step 6: Final answer
    x = 1,888,157.08

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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.