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Finding the Third Proportional to 420,147 and 899,343

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Solution

The third proportional to 420,147 and 899,343 is: 1,925,082.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,147 : 899,343 = 899,343 : x
  2. Step 2: Convert to fraction form
    420,147/899,343 = 899,343/x
  3. Step 3: Cross multiply
    420,147x = 899,343 × 899,343
  4. Step 4: Simplify right side
    420,147x = 808,817,831,649
  5. Step 5: Solve for x
    x = 808,817,831,649/420,147
  6. Step 6: Final answer
    x = 1,925,082.96

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.