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Finding the Third Proportional to 485,405 and 759,792

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Solution

The third proportional to 485,405 and 759,792 is: 1,189,282.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,405 : 759,792 = 759,792 : x
  2. Step 2: Convert to fraction form
    485,405/759,792 = 759,792/x
  3. Step 3: Cross multiply
    485,405x = 759,792 × 759,792
  4. Step 4: Simplify right side
    485,405x = 577,283,883,264
  5. Step 5: Solve for x
    x = 577,283,883,264/485,405
  6. Step 6: Final answer
    x = 1,189,282.94

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Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.