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Finding the Third Proportional to 551,922 and 1,221,880

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Solution

The third proportional to 551,922 and 1,221,880 is: 2,705,075.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,922 : 1,221,880 = 1,221,880 : x
  2. Step 2: Convert to fraction form
    551,922/1,221,880 = 1,221,880/x
  3. Step 3: Cross multiply
    551,922x = 1,221,880 × 1,221,880
  4. Step 4: Simplify right side
    551,922x = 1,492,990,734,400
  5. Step 5: Solve for x
    x = 1,492,990,734,400/551,922
  6. Step 6: Final answer
    x = 2,705,075.60

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.