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Finding the Third Proportional to 642,580.50 and 1,395,936

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Solution

The third proportional to 642,580.50 and 1,395,936 is: 3,032,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,580.50 : 1,395,936 = 1,395,936 : x
  2. Step 2: Convert to fraction form
    642,580.50/1,395,936 = 1,395,936/x
  3. Step 3: Cross multiply
    642,580.50x = 1,395,936 × 1,395,936
  4. Step 4: Simplify right side
    642,580.50x = 1,948,637,316,096
  5. Step 5: Solve for x
    x = 1,948,637,316,096/642,580.50
  6. Step 6: Final answer
    x = 3,032,518.60

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.