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Finding the Third Proportional to 550,420 and 775,108

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Solution

The third proportional to 550,420 and 775,108 is: 1,091,516.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,420 : 775,108 = 775,108 : x
  2. Step 2: Convert to fraction form
    550,420/775,108 = 775,108/x
  3. Step 3: Cross multiply
    550,420x = 775,108 × 775,108
  4. Step 4: Simplify right side
    550,420x = 600,792,411,664
  5. Step 5: Solve for x
    x = 600,792,411,664/550,420
  6. Step 6: Final answer
    x = 1,091,516.32

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.