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Finding the Third Proportional to 453,828 and 987,240

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Solution

The third proportional to 453,828 and 987,240 is: 2,147,603.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,828 : 987,240 = 987,240 : x
  2. Step 2: Convert to fraction form
    453,828/987,240 = 987,240/x
  3. Step 3: Cross multiply
    453,828x = 987,240 × 987,240
  4. Step 4: Simplify right side
    453,828x = 974,642,817,600
  5. Step 5: Solve for x
    x = 974,642,817,600/453,828
  6. Step 6: Final answer
    x = 2,147,603.98

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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.