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Finding the Third Proportional to 387,985.50 and 582,511.50

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Solution

The third proportional to 387,985.50 and 582,511.50 is: 874,567.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,985.50 : 582,511.50 = 582,511.50 : x
  2. Step 2: Convert to fraction form
    387,985.50/582,511.50 = 582,511.50/x
  3. Step 3: Cross multiply
    387,985.50x = 582,511.50 × 582,511.50
  4. Step 4: Simplify right side
    387,985.50x = 339,319,647,632.25
  5. Step 5: Solve for x
    x = 339,319,647,632.25/387,985.50
  6. Step 6: Final answer
    x = 874,567.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.