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Finding the Third Proportional to 399,907.50 and 635,986.50

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Solution

The third proportional to 399,907.50 and 635,986.50 is: 1,011,430.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,907.50 : 635,986.50 = 635,986.50 : x
  2. Step 2: Convert to fraction form
    399,907.50/635,986.50 = 635,986.50/x
  3. Step 3: Cross multiply
    399,907.50x = 635,986.50 × 635,986.50
  4. Step 4: Simplify right side
    399,907.50x = 404,478,828,182.25
  5. Step 5: Solve for x
    x = 404,478,828,182.25/399,907.50
  6. Step 6: Final answer
    x = 1,011,430.96

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.