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Finding the Third Proportional to 310,317 and 669,619.50

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Solution

The third proportional to 310,317 and 669,619.50 is: 1,444,942.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,317 : 669,619.50 = 669,619.50 : x
  2. Step 2: Convert to fraction form
    310,317/669,619.50 = 669,619.50/x
  3. Step 3: Cross multiply
    310,317x = 669,619.50 × 669,619.50
  4. Step 4: Simplify right side
    310,317x = 448,390,274,780.25
  5. Step 5: Solve for x
    x = 448,390,274,780.25/310,317
  6. Step 6: Final answer
    x = 1,444,942.67

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.