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Finding the Third Proportional to 310,339 and 664,971.50

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Solution

The third proportional to 310,339 and 664,971.50 is: 1,424,851.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,339 : 664,971.50 = 664,971.50 : x
  2. Step 2: Convert to fraction form
    310,339/664,971.50 = 664,971.50/x
  3. Step 3: Cross multiply
    310,339x = 664,971.50 × 664,971.50
  4. Step 4: Simplify right side
    310,339x = 442,187,095,812.25
  5. Step 5: Solve for x
    x = 442,187,095,812.25/310,339
  6. Step 6: Final answer
    x = 1,424,851.84

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.