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Finding the Third Proportional to 205,428 and 448,668

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Solution

The third proportional to 205,428 and 448,668 is: 979,919.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,428 : 448,668 = 448,668 : x
  2. Step 2: Convert to fraction form
    205,428/448,668 = 448,668/x
  3. Step 3: Cross multiply
    205,428x = 448,668 × 448,668
  4. Step 4: Simplify right side
    205,428x = 201,302,974,224
  5. Step 5: Solve for x
    x = 201,302,974,224/205,428
  6. Step 6: Final answer
    x = 979,919.85

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.