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Finding the Third Proportional to 522,290 and 781,455

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Solution

The third proportional to 522,290 and 781,455 is: 1,169,220.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,290 : 781,455 = 781,455 : x
  2. Step 2: Convert to fraction form
    522,290/781,455 = 781,455/x
  3. Step 3: Cross multiply
    522,290x = 781,455 × 781,455
  4. Step 4: Simplify right side
    522,290x = 610,671,917,025
  5. Step 5: Solve for x
    x = 610,671,917,025/522,290
  6. Step 6: Final answer
    x = 1,169,220.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.