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Finding the Third Proportional to 448,440 and 666,275

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Solution

The third proportional to 448,440 and 666,275 is: 989,925.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,440 : 666,275 = 666,275 : x
  2. Step 2: Convert to fraction form
    448,440/666,275 = 666,275/x
  3. Step 3: Cross multiply
    448,440x = 666,275 × 666,275
  4. Step 4: Simplify right side
    448,440x = 443,922,375,625
  5. Step 5: Solve for x
    x = 443,922,375,625/448,440
  6. Step 6: Final answer
    x = 989,925.91

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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.