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Finding the Third Proportional to 743,280 and 1,121,880

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Solution

The third proportional to 743,280 and 1,121,880 is: 1,693,325.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,280 : 1,121,880 = 1,121,880 : x
  2. Step 2: Convert to fraction form
    743,280/1,121,880 = 1,121,880/x
  3. Step 3: Cross multiply
    743,280x = 1,121,880 × 1,121,880
  4. Step 4: Simplify right side
    743,280x = 1,258,614,734,400
  5. Step 5: Solve for x
    x = 1,258,614,734,400/743,280
  6. Step 6: Final answer
    x = 1,693,325.17

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.