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Finding the Third Proportional to 400,322 and 879,376

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Solution

The third proportional to 400,322 and 879,376 is: 1,931,700.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,322 : 879,376 = 879,376 : x
  2. Step 2: Convert to fraction form
    400,322/879,376 = 879,376/x
  3. Step 3: Cross multiply
    400,322x = 879,376 × 879,376
  4. Step 4: Simplify right side
    400,322x = 773,302,149,376
  5. Step 5: Solve for x
    x = 773,302,149,376/400,322
  6. Step 6: Final answer
    x = 1,931,700.35

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.