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Finding the Third Proportional to 453,464 and 989,821

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Solution

The third proportional to 453,464 and 989,821 is: 2,160,580.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,464 : 989,821 = 989,821 : x
  2. Step 2: Convert to fraction form
    453,464/989,821 = 989,821/x
  3. Step 3: Cross multiply
    453,464x = 989,821 × 989,821
  4. Step 4: Simplify right side
    453,464x = 979,745,612,041
  5. Step 5: Solve for x
    x = 979,745,612,041/453,464
  6. Step 6: Final answer
    x = 2,160,580.80

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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.