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Finding the Third Proportional to 315,328 and 489,598

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Solution

The third proportional to 315,328 and 489,598 is: 760,180.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,328 : 489,598 = 489,598 : x
  2. Step 2: Convert to fraction form
    315,328/489,598 = 489,598/x
  3. Step 3: Cross multiply
    315,328x = 489,598 × 489,598
  4. Step 4: Simplify right side
    315,328x = 239,706,201,604
  5. Step 5: Solve for x
    x = 239,706,201,604/315,328
  6. Step 6: Final answer
    x = 760,180.52

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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.