Home / 669,664.69-1,004,642.53-220,431.20

Finding the Fourth Proportional to 669,664.69, 1,004,642.53 and 220,431.20

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Solution

The fourth proportional to 669,664.69, 1,004,642.53 and 220,431.20 is: 330,694.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,664.69 : 1,004,642.53 = 220,431.20 : x
  2. Step 2: Convert to fraction form
    669,664.69/1,004,642.53 = 220,431.20/x
  3. Step 3: Cross multiply
    669,664.69x = 1,004,642.53 × 220,431.20
  4. Step 4: Simplify right side
    669,664.69x = 221,454,552,884.65
  5. Step 5: Solve for x
    x = 221,454,552,884.65/669,664.69
  6. Step 6: Final answer
    x = 330,694.68

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Double scale
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Similar ratio
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1.5x scale

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.