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Finding the Third Proportional to 410,242 and 620,842

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Solution

The third proportional to 410,242 and 620,842 is: 939,554.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    410,242 : 620,842 = 620,842 : x
  2. Step 2: Convert to fraction form
    410,242/620,842 = 620,842/x
  3. Step 3: Cross multiply
    410,242x = 620,842 × 620,842
  4. Step 4: Simplify right side
    410,242x = 385,444,788,964
  5. Step 5: Solve for x
    x = 385,444,788,964/410,242
  6. Step 6: Final answer
    x = 939,554.67

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.