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Finding the Third Proportional to 412,903 and 603,421

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Solution

The third proportional to 412,903 and 603,421 is: 881,846.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,903 : 603,421 = 603,421 : x
  2. Step 2: Convert to fraction form
    412,903/603,421 = 603,421/x
  3. Step 3: Cross multiply
    412,903x = 603,421 × 603,421
  4. Step 4: Simplify right side
    412,903x = 364,116,903,241
  5. Step 5: Solve for x
    x = 364,116,903,241/412,903
  6. Step 6: Final answer
    x = 881,846.11

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.