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Finding the Third Proportional to 385,803 and 613,912.50

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Solution

The third proportional to 385,803 and 613,912.50 is: 976,893.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,803 : 613,912.50 = 613,912.50 : x
  2. Step 2: Convert to fraction form
    385,803/613,912.50 = 613,912.50/x
  3. Step 3: Cross multiply
    385,803x = 613,912.50 × 613,912.50
  4. Step 4: Simplify right side
    385,803x = 376,888,557,656.25
  5. Step 5: Solve for x
    x = 376,888,557,656.25/385,803
  6. Step 6: Final answer
    x = 976,893.80

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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.