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Finding the Third Proportional to 490,430 and 749,901

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Solution

The third proportional to 490,430 and 749,901 is: 1,146,649.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,430 : 749,901 = 749,901 : x
  2. Step 2: Convert to fraction form
    490,430/749,901 = 749,901/x
  3. Step 3: Cross multiply
    490,430x = 749,901 × 749,901
  4. Step 4: Simplify right side
    490,430x = 562,351,509,801
  5. Step 5: Solve for x
    x = 562,351,509,801/490,430
  6. Step 6: Final answer
    x = 1,146,649.90

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.