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Finding the Third Proportional to 380,349 and 531,724.50

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Solution

The third proportional to 380,349 and 531,724.50 is: 743,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,349 : 531,724.50 = 531,724.50 : x
  2. Step 2: Convert to fraction form
    380,349/531,724.50 = 531,724.50/x
  3. Step 3: Cross multiply
    380,349x = 531,724.50 × 531,724.50
  4. Step 4: Simplify right side
    380,349x = 282,730,943,900.25
  5. Step 5: Solve for x
    x = 282,730,943,900.25/380,349
  6. Step 6: Final answer
    x = 743,346.10

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.