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Finding the Third Proportional to 891,360 and 1,921,321

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Solution

The third proportional to 891,360 and 1,921,321 is: 4,141,395.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,360 : 1,921,321 = 1,921,321 : x
  2. Step 2: Convert to fraction form
    891,360/1,921,321 = 1,921,321/x
  3. Step 3: Cross multiply
    891,360x = 1,921,321 × 1,921,321
  4. Step 4: Simplify right side
    891,360x = 3,691,474,385,041
  5. Step 5: Solve for x
    x = 3,691,474,385,041/891,360
  6. Step 6: Final answer
    x = 4,141,395.60

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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.