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Finding the Third Proportional to 315,375 and 489,672

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Solution

The third proportional to 315,375 and 489,672 is: 760,297.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,375 : 489,672 = 489,672 : x
  2. Step 2: Convert to fraction form
    315,375/489,672 = 489,672/x
  3. Step 3: Cross multiply
    315,375x = 489,672 × 489,672
  4. Step 4: Simplify right side
    315,375x = 239,778,667,584
  5. Step 5: Solve for x
    x = 239,778,667,584/315,375
  6. Step 6: Final answer
    x = 760,297.00

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These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.