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Finding the Third Proportional to 579,672 and 891,108

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Solution

The third proportional to 579,672 and 891,108 is: 1,369,866.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,672 : 891,108 = 891,108 : x
  2. Step 2: Convert to fraction form
    579,672/891,108 = 891,108/x
  3. Step 3: Cross multiply
    579,672x = 891,108 × 891,108
  4. Step 4: Simplify right side
    579,672x = 794,073,467,664
  5. Step 5: Solve for x
    x = 794,073,467,664/579,672
  6. Step 6: Final answer
    x = 1,369,866.87

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.