Home / 669,405.77-1,004,140.92-220,116.68

Finding the Fourth Proportional to 669,405.77, 1,004,140.92 and 220,116.68

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Solution

The fourth proportional to 669,405.77, 1,004,140.92 and 220,116.68 is: 330,185.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,405.77 : 1,004,140.92 = 220,116.68 : x
  2. Step 2: Convert to fraction form
    669,405.77/1,004,140.92 = 220,116.68/x
  3. Step 3: Cross multiply
    669,405.77x = 1,004,140.92 × 220,116.68
  4. Step 4: Simplify right side
    669,405.77x = 221,028,160,541.84
  5. Step 5: Solve for x
    x = 221,028,160,541.84/669,405.77
  6. Step 6: Final answer
    x = 330,185.62

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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.