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Finding the Third Proportional to 432,600 and 645,312

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Solution

The third proportional to 432,600 and 645,312 is: 962,615.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,600 : 645,312 = 645,312 : x
  2. Step 2: Convert to fraction form
    432,600/645,312 = 645,312/x
  3. Step 3: Cross multiply
    432,600x = 645,312 × 645,312
  4. Step 4: Simplify right side
    432,600x = 416,427,577,344
  5. Step 5: Solve for x
    x = 416,427,577,344/432,600
  6. Step 6: Final answer
    x = 962,615.76

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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.