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Finding the Third Proportional to 401,620 and 869,367

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Solution

The third proportional to 401,620 and 869,367 is: 1,881,875.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,620 : 869,367 = 869,367 : x
  2. Step 2: Convert to fraction form
    401,620/869,367 = 869,367/x
  3. Step 3: Cross multiply
    401,620x = 869,367 × 869,367
  4. Step 4: Simplify right side
    401,620x = 755,798,980,689
  5. Step 5: Solve for x
    x = 755,798,980,689/401,620
  6. Step 6: Final answer
    x = 1,881,875.85

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.