Home / 1,090,120.32-1,635,187.77-380,145.60

Finding the Fourth Proportional to 1,090,120.32, 1,635,187.77 and 380,145.60

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Solution

The fourth proportional to 1,090,120.32, 1,635,187.77 and 380,145.60 is: 570,220.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,090,120.32 : 1,635,187.77 = 380,145.60 : x
  2. Step 2: Convert to fraction form
    1,090,120.32/1,635,187.77 = 380,145.60/x
  3. Step 3: Cross multiply
    1,090,120.32x = 1,635,187.77 × 380,145.60
  4. Step 4: Simplify right side
    1,090,120.32x = 621,609,435,939.31
  5. Step 5: Solve for x
    x = 621,609,435,939.31/1,090,120.32
  6. Step 6: Final answer
    x = 570,220.94

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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.