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Finding the Third Proportional to 426,596 and 639,240

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Solution

The third proportional to 426,596 and 639,240 is: 957,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,596 : 639,240 = 639,240 : x
  2. Step 2: Convert to fraction form
    426,596/639,240 = 639,240/x
  3. Step 3: Cross multiply
    426,596x = 639,240 × 639,240
  4. Step 4: Simplify right side
    426,596x = 408,627,777,600
  5. Step 5: Solve for x
    x = 408,627,777,600/426,596
  6. Step 6: Final answer
    x = 957,880.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.