Home / 1,106,890.80-1,660,336.20-396,990.60

Finding the Fourth Proportional to 1,106,890.80, 1,660,336.20 and 396,990.60

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Solution

The fourth proportional to 1,106,890.80, 1,660,336.20 and 396,990.60 is: 595,485.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,106,890.80 : 1,660,336.20 = 396,990.60 : x
  2. Step 2: Convert to fraction form
    1,106,890.80/1,660,336.20 = 396,990.60/x
  3. Step 3: Cross multiply
    1,106,890.80x = 1,660,336.20 × 396,990.60
  4. Step 4: Simplify right side
    1,106,890.80x = 659,137,864,239.72
  5. Step 5: Solve for x
    x = 659,137,864,239.72/1,106,890.80
  6. Step 6: Final answer
    x = 595,485.90

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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.