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Finding the Third Proportional to 454,056 and 987,920

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Solution

The third proportional to 454,056 and 987,920 is: 2,149,483.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    454,056 : 987,920 = 987,920 : x
  2. Step 2: Convert to fraction form
    454,056/987,920 = 987,920/x
  3. Step 3: Cross multiply
    454,056x = 987,920 × 987,920
  4. Step 4: Simplify right side
    454,056x = 975,985,926,400
  5. Step 5: Solve for x
    x = 975,985,926,400/454,056
  6. Step 6: Final answer
    x = 2,149,483.60

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.