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Finding the Third Proportional to 553,686 and 791,765

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Solution

The third proportional to 553,686 and 791,765 is: 1,132,215.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,686 : 791,765 = 791,765 : x
  2. Step 2: Convert to fraction form
    553,686/791,765 = 791,765/x
  3. Step 3: Cross multiply
    553,686x = 791,765 × 791,765
  4. Step 4: Simplify right side
    553,686x = 626,891,815,225
  5. Step 5: Solve for x
    x = 626,891,815,225/553,686
  6. Step 6: Final answer
    x = 1,132,215.40

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Why These Related Problems?

These problems maintain the same ratio (1.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.