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Finding the Third Proportional to 489,765 and 742,041

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Solution

The third proportional to 489,765 and 742,041 is: 1,124,263.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,765 : 742,041 = 742,041 : x
  2. Step 2: Convert to fraction form
    489,765/742,041 = 742,041/x
  3. Step 3: Cross multiply
    489,765x = 742,041 × 742,041
  4. Step 4: Simplify right side
    489,765x = 550,624,845,681
  5. Step 5: Solve for x
    x = 550,624,845,681/489,765
  6. Step 6: Final answer
    x = 1,124,263.36

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.