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Finding the Third Proportional to 831,097 and 1,289,415

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Solution

The third proportional to 831,097 and 1,289,415 is: 2,000,477.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    831,097 : 1,289,415 = 1,289,415 : x
  2. Step 2: Convert to fraction form
    831,097/1,289,415 = 1,289,415/x
  3. Step 3: Cross multiply
    831,097x = 1,289,415 × 1,289,415
  4. Step 4: Simplify right side
    831,097x = 1,662,591,042,225
  5. Step 5: Solve for x
    x = 1,662,591,042,225/831,097
  6. Step 6: Final answer
    x = 2,000,477.73

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.