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Finding the Third Proportional to 366,988 and 561,421

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Solution

The third proportional to 366,988 and 561,421 is: 858,866.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    366,988 : 561,421 = 561,421 : x
  2. Step 2: Convert to fraction form
    366,988/561,421 = 561,421/x
  3. Step 3: Cross multiply
    366,988x = 561,421 × 561,421
  4. Step 4: Simplify right side
    366,988x = 315,193,539,241
  5. Step 5: Solve for x
    x = 315,193,539,241/366,988
  6. Step 6: Final answer
    x = 858,866.06

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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.