Home / 1,391,209-2,086,205.82-492,352.12

Finding the Fourth Proportional to 1,391,209, 2,086,205.82 and 492,352.12

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Solution

The fourth proportional to 1,391,209, 2,086,205.82 and 492,352.12 is: 738,313.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,209 : 2,086,205.82 = 492,352.12 : x
  2. Step 2: Convert to fraction form
    1,391,209/2,086,205.82 = 492,352.12/x
  3. Step 3: Cross multiply
    1,391,209x = 2,086,205.82 × 492,352.12
  4. Step 4: Simplify right side
    1,391,209x = 1,027,147,858,233.34
  5. Step 5: Solve for x
    x = 1,027,147,858,233.34/1,391,209
  6. Step 6: Final answer
    x = 738,313.12

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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.