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Finding the Third Proportional to 643,584 and 964,128

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Solution

The third proportional to 643,584 and 964,128 is: 1,444,322.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,584 : 964,128 = 964,128 : x
  2. Step 2: Convert to fraction form
    643,584/964,128 = 964,128/x
  3. Step 3: Cross multiply
    643,584x = 964,128 × 964,128
  4. Step 4: Simplify right side
    643,584x = 929,542,800,384
  5. Step 5: Solve for x
    x = 929,542,800,384/643,584
  6. Step 6: Final answer
    x = 1,444,322.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.