Home / 669,993.36-1,005,145.50-220,698.12

Finding the Fourth Proportional to 669,993.36, 1,005,145.50 and 220,698.12

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Solution

The fourth proportional to 669,993.36, 1,005,145.50 and 220,698.12 is: 331,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,993.36 : 1,005,145.50 = 220,698.12 : x
  2. Step 2: Convert to fraction form
    669,993.36/1,005,145.50 = 220,698.12/x
  3. Step 3: Cross multiply
    669,993.36x = 1,005,145.50 × 220,698.12
  4. Step 4: Simplify right side
    669,993.36x = 221,833,722,176.46
  5. Step 5: Solve for x
    x = 221,833,722,176.46/669,993.36
  6. Step 6: Final answer
    x = 331,098.39

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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.