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Finding the Third Proportional to 485,402 and 759,790

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Solution

The third proportional to 485,402 and 759,790 is: 1,189,284.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,402 : 759,790 = 759,790 : x
  2. Step 2: Convert to fraction form
    485,402/759,790 = 759,790/x
  3. Step 3: Cross multiply
    485,402x = 759,790 × 759,790
  4. Step 4: Simplify right side
    485,402x = 577,280,844,100
  5. Step 5: Solve for x
    x = 577,280,844,100/485,402
  6. Step 6: Final answer
    x = 1,189,284.02

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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.