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Finding the Third Proportional to 432,692 and 645,438

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Solution

The third proportional to 432,692 and 645,438 is: 962,786.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,692 : 645,438 = 645,438 : x
  2. Step 2: Convert to fraction form
    432,692/645,438 = 645,438/x
  3. Step 3: Cross multiply
    432,692x = 645,438 × 645,438
  4. Step 4: Simplify right side
    432,692x = 416,590,211,844
  5. Step 5: Solve for x
    x = 416,590,211,844/432,692
  6. Step 6: Final answer
    x = 962,786.95

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.