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Finding the Third Proportional to 619,280 and 872,089

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Solution

The third proportional to 619,280 and 872,089 is: 1,228,102.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,280 : 872,089 = 872,089 : x
  2. Step 2: Convert to fraction form
    619,280/872,089 = 872,089/x
  3. Step 3: Cross multiply
    619,280x = 872,089 × 872,089
  4. Step 4: Simplify right side
    619,280x = 760,539,223,921
  5. Step 5: Solve for x
    x = 760,539,223,921/619,280
  6. Step 6: Final answer
    x = 1,228,102.35

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.