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Finding the Third Proportional to 553,617 and 867,330

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Solution

The third proportional to 553,617 and 867,330 is: 1,358,811.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,617 : 867,330 = 867,330 : x
  2. Step 2: Convert to fraction form
    553,617/867,330 = 867,330/x
  3. Step 3: Cross multiply
    553,617x = 867,330 × 867,330
  4. Step 4: Simplify right side
    553,617x = 752,261,328,900
  5. Step 5: Solve for x
    x = 752,261,328,900/553,617
  6. Step 6: Final answer
    x = 1,358,811.83

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.