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Finding the Third Proportional to 476,104 and 645,880

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Solution

The third proportional to 476,104 and 645,880 is: 876,197.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,104 : 645,880 = 645,880 : x
  2. Step 2: Convert to fraction form
    476,104/645,880 = 645,880/x
  3. Step 3: Cross multiply
    476,104x = 645,880 × 645,880
  4. Step 4: Simplify right side
    476,104x = 417,160,974,400
  5. Step 5: Solve for x
    x = 417,160,974,400/476,104
  6. Step 6: Final answer
    x = 876,197.16

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Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.