Home / 1,391,208-2,086,204.32-492,351.12

Finding the Fourth Proportional to 1,391,208, 2,086,204.32 and 492,351.12

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Solution

The fourth proportional to 1,391,208, 2,086,204.32 and 492,351.12 is: 738,311.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,208 : 2,086,204.32 = 492,351.12 : x
  2. Step 2: Convert to fraction form
    1,391,208/2,086,204.32 = 492,351.12/x
  3. Step 3: Cross multiply
    1,391,208x = 2,086,204.32 × 492,351.12
  4. Step 4: Simplify right side
    1,391,208x = 1,027,145,033,500.84
  5. Step 5: Solve for x
    x = 1,027,145,033,500.84/1,391,208
  6. Step 6: Final answer
    x = 738,311.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.