Home / 1,391,518.73-2,086,519.31-418,741.30

Finding the Fourth Proportional to 1,391,518.73, 2,086,519.31 and 418,741.30

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Solution

The fourth proportional to 1,391,518.73, 2,086,519.31 and 418,741.30 is: 627,883.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,518.73 : 2,086,519.31 = 418,741.30 : x
  2. Step 2: Convert to fraction form
    1,391,518.73/2,086,519.31 = 418,741.30/x
  3. Step 3: Cross multiply
    1,391,518.73x = 2,086,519.31 × 418,741.30
  4. Step 4: Simplify right side
    1,391,518.73x = 873,711,812,485.20
  5. Step 5: Solve for x
    x = 873,711,812,485.20/1,391,518.73
  6. Step 6: Final answer
    x = 627,883.62

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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.