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Finding the Third Proportional to 640,915.03 and 992,077.88

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Solution

The third proportional to 640,915.03 and 992,077.88 is: 1,535,645.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,915.03 : 992,077.88 = 992,077.88 : x
  2. Step 2: Convert to fraction form
    640,915.03/992,077.88 = 992,077.88/x
  3. Step 3: Cross multiply
    640,915.03x = 992,077.88 × 992,077.88
  4. Step 4: Simplify right side
    640,915.03x = 984,218,510,064.52
  5. Step 5: Solve for x
    x = 984,218,510,064.52/640,915.03
  6. Step 6: Final answer
    x = 1,535,645.85

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.