Home / 1,111,267.20-1,666,257.12-978,414.24

Finding the Fourth Proportional to 1,111,267.20, 1,666,257.12 and 978,414.24

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Solution

The fourth proportional to 1,111,267.20, 1,666,257.12 and 978,414.24 is: 1,467,054.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,111,267.20 : 1,666,257.12 = 978,414.24 : x
  2. Step 2: Convert to fraction form
    1,111,267.20/1,666,257.12 = 978,414.24/x
  3. Step 3: Cross multiply
    1,111,267.20x = 1,666,257.12 × 978,414.24
  4. Step 4: Simplify right side
    1,111,267.20x = 1,630,289,693,709.39
  5. Step 5: Solve for x
    x = 1,630,289,693,709.39/1,111,267.20
  6. Step 6: Final answer
    x = 1,467,054.63

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