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Finding the Third Proportional to 551,588 and 843,420

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Solution

The third proportional to 551,588 and 843,420 is: 1,289,653.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,588 : 843,420 = 843,420 : x
  2. Step 2: Convert to fraction form
    551,588/843,420 = 843,420/x
  3. Step 3: Cross multiply
    551,588x = 843,420 × 843,420
  4. Step 4: Simplify right side
    551,588x = 711,357,296,400
  5. Step 5: Solve for x
    x = 711,357,296,400/551,588
  6. Step 6: Final answer
    x = 1,289,653.32

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.