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Finding the Third Proportional to 289,196 and 626,668

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Solution

The third proportional to 289,196 and 626,668 is: 1,357,946.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,196 : 626,668 = 626,668 : x
  2. Step 2: Convert to fraction form
    289,196/626,668 = 626,668/x
  3. Step 3: Cross multiply
    289,196x = 626,668 × 626,668
  4. Step 4: Simplify right side
    289,196x = 392,712,782,224
  5. Step 5: Solve for x
    x = 392,712,782,224/289,196
  6. Step 6: Final answer
    x = 1,357,946.80

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.