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Finding the Third Proportional to 476,876 and 668,388

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Solution

The third proportional to 476,876 and 668,388 is: 936,810.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,876 : 668,388 = 668,388 : x
  2. Step 2: Convert to fraction form
    476,876/668,388 = 668,388/x
  3. Step 3: Cross multiply
    476,876x = 668,388 × 668,388
  4. Step 4: Simplify right side
    476,876x = 446,742,518,544
  5. Step 5: Solve for x
    x = 446,742,518,544/476,876
  6. Step 6: Final answer
    x = 936,810.66

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.