Home / 478,928.39-661,016.90-275,119.09

Finding the Fourth Proportional to 478,928.39, 661,016.90 and 275,119.09

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Solution

The fourth proportional to 478,928.39, 661,016.90 and 275,119.09 is: 379,719.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,928.39 : 661,016.90 = 275,119.09 : x
  2. Step 2: Convert to fraction form
    478,928.39/661,016.90 = 275,119.09/x
  3. Step 3: Cross multiply
    478,928.39x = 661,016.90 × 275,119.09
  4. Step 4: Simplify right side
    478,928.39x = 181,858,367,037.88
  5. Step 5: Solve for x
    x = 181,858,367,037.88/478,928.39
  6. Step 6: Final answer
    x = 379,719.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.