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Finding the Third Proportional to 328,309.50 and 679,366.50

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Solution

The third proportional to 328,309.50 and 679,366.50 is: 1,405,804.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,309.50 : 679,366.50 = 679,366.50 : x
  2. Step 2: Convert to fraction form
    328,309.50/679,366.50 = 679,366.50/x
  3. Step 3: Cross multiply
    328,309.50x = 679,366.50 × 679,366.50
  4. Step 4: Simplify right side
    328,309.50x = 461,538,841,322.25
  5. Step 5: Solve for x
    x = 461,538,841,322.25/328,309.50
  6. Step 6: Final answer
    x = 1,405,804.10

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.