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Finding the Third Proportional to 420,599 and 912,184

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Solution

The third proportional to 420,599 and 912,184 is: 1,978,320.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,599 : 912,184 = 912,184 : x
  2. Step 2: Convert to fraction form
    420,599/912,184 = 912,184/x
  3. Step 3: Cross multiply
    420,599x = 912,184 × 912,184
  4. Step 4: Simplify right side
    420,599x = 832,079,649,856
  5. Step 5: Solve for x
    x = 832,079,649,856/420,599
  6. Step 6: Final answer
    x = 1,978,320.56

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.