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Finding the Third Proportional to 630,816 and 1,378,176

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Solution

The third proportional to 630,816 and 1,378,176 is: 3,010,971.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    630,816 : 1,378,176 = 1,378,176 : x
  2. Step 2: Convert to fraction form
    630,816/1,378,176 = 1,378,176/x
  3. Step 3: Cross multiply
    630,816x = 1,378,176 × 1,378,176
  4. Step 4: Simplify right side
    630,816x = 1,899,369,086,976
  5. Step 5: Solve for x
    x = 1,899,369,086,976/630,816
  6. Step 6: Final answer
    x = 3,010,971.64

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.