Home / 1,090,121.32-1,635,189.27-380,146.60

Finding the Fourth Proportional to 1,090,121.32, 1,635,189.27 and 380,146.60

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Solution

The fourth proportional to 1,090,121.32, 1,635,189.27 and 380,146.60 is: 570,222.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,121.32 : 1,635,189.27 = 380,146.60 : x
  2. Step 2: Convert to fraction form
    1,090,121.32/1,635,189.27 = 380,146.60/x
  3. Step 3: Cross multiply
    1,090,121.32x = 1,635,189.27 × 380,146.60
  4. Step 4: Simplify right side
    1,090,121.32x = 621,611,641,346.98
  5. Step 5: Solve for x
    x = 621,611,641,346.98/1,090,121.32
  6. Step 6: Final answer
    x = 570,222.44

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Double scale
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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.