Home / 669,406.38-1,004,141.85-220,117.30

Finding the Fourth Proportional to 669,406.38, 1,004,141.85 and 220,117.30

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Solution

The fourth proportional to 669,406.38, 1,004,141.85 and 220,117.30 is: 330,186.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,406.38 : 1,004,141.85 = 220,117.30 : x
  2. Step 2: Convert to fraction form
    669,406.38/1,004,141.85 = 220,117.30/x
  3. Step 3: Cross multiply
    669,406.38x = 1,004,141.85 × 220,117.30
  4. Step 4: Simplify right side
    669,406.38x = 221,028,989,503.21
  5. Step 5: Solve for x
    x = 221,028,989,503.21/669,406.38
  6. Step 6: Final answer
    x = 330,186.56

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Double scale
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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.