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Finding the Third Proportional to 393,672.75 and 607,912.50

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Solution

The third proportional to 393,672.75 and 607,912.50 is: 938,743.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,672.75 : 607,912.50 = 607,912.50 : x
  2. Step 2: Convert to fraction form
    393,672.75/607,912.50 = 607,912.50/x
  3. Step 3: Cross multiply
    393,672.75x = 607,912.50 × 607,912.50
  4. Step 4: Simplify right side
    393,672.75x = 369,557,607,656.25
  5. Step 5: Solve for x
    x = 369,557,607,656.25/393,672.75
  6. Step 6: Final answer
    x = 938,743.18

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Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.