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Finding the Third Proportional to 408,466 and 618,237.50

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Solution

The third proportional to 408,466 and 618,237.50 is: 935,739.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,466 : 618,237.50 = 618,237.50 : x
  2. Step 2: Convert to fraction form
    408,466/618,237.50 = 618,237.50/x
  3. Step 3: Cross multiply
    408,466x = 618,237.50 × 618,237.50
  4. Step 4: Simplify right side
    408,466x = 382,217,606,406.25
  5. Step 5: Solve for x
    x = 382,217,606,406.25/408,466
  6. Step 6: Final answer
    x = 935,739.10

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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.