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Finding the Third Proportional to 551,180 and 780,132

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Solution

The third proportional to 551,180 and 780,132 is: 1,104,187.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,180 : 780,132 = 780,132 : x
  2. Step 2: Convert to fraction form
    551,180/780,132 = 780,132/x
  3. Step 3: Cross multiply
    551,180x = 780,132 × 780,132
  4. Step 4: Simplify right side
    551,180x = 608,605,937,424
  5. Step 5: Solve for x
    x = 608,605,937,424/551,180
  6. Step 6: Final answer
    x = 1,104,187.27

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.