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Finding the Third Proportional to 550,985 and 851,411

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Solution

The third proportional to 550,985 and 851,411 is: 1,315,645.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,985 : 851,411 = 851,411 : x
  2. Step 2: Convert to fraction form
    550,985/851,411 = 851,411/x
  3. Step 3: Cross multiply
    550,985x = 851,411 × 851,411
  4. Step 4: Simplify right side
    550,985x = 724,900,690,921
  5. Step 5: Solve for x
    x = 724,900,690,921/550,985
  6. Step 6: Final answer
    x = 1,315,645.06

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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.