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Finding the Third Proportional to 386,255 and 565,556

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Solution

The third proportional to 386,255 and 565,556 is: 828,089.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,255 : 565,556 = 565,556 : x
  2. Step 2: Convert to fraction form
    386,255/565,556 = 565,556/x
  3. Step 3: Cross multiply
    386,255x = 565,556 × 565,556
  4. Step 4: Simplify right side
    386,255x = 319,853,589,136
  5. Step 5: Solve for x
    x = 319,853,589,136/386,255
  6. Step 6: Final answer
    x = 828,089.19

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.