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Finding the Third Proportional to 621,240 and 1,344,036

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Solution

The third proportional to 621,240 and 1,344,036 is: 2,907,785.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,240 : 1,344,036 = 1,344,036 : x
  2. Step 2: Convert to fraction form
    621,240/1,344,036 = 1,344,036/x
  3. Step 3: Cross multiply
    621,240x = 1,344,036 × 1,344,036
  4. Step 4: Simplify right side
    621,240x = 1,806,432,769,296
  5. Step 5: Solve for x
    x = 1,806,432,769,296/621,240
  6. Step 6: Final answer
    x = 2,907,785.67

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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.