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Finding the Third Proportional to 432,602 and 645,315

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Solution

The third proportional to 432,602 and 645,315 is: 962,620.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,602 : 645,315 = 645,315 : x
  2. Step 2: Convert to fraction form
    432,602/645,315 = 645,315/x
  3. Step 3: Cross multiply
    432,602x = 645,315 × 645,315
  4. Step 4: Simplify right side
    432,602x = 416,431,449,225
  5. Step 5: Solve for x
    x = 416,431,449,225/432,602
  6. Step 6: Final answer
    x = 962,620.26

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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.