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Finding the Third Proportional to 490,708 and 738,520

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Solution

The third proportional to 490,708 and 738,520 is: 1,111,479.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,708 : 738,520 = 738,520 : x
  2. Step 2: Convert to fraction form
    490,708/738,520 = 738,520/x
  3. Step 3: Cross multiply
    490,708x = 738,520 × 738,520
  4. Step 4: Simplify right side
    490,708x = 545,411,790,400
  5. Step 5: Solve for x
    x = 545,411,790,400/490,708
  6. Step 6: Final answer
    x = 1,111,479.31

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.