Home / 479,078.37-660,961.21-307,091.17

Finding the Fourth Proportional to 479,078.37, 660,961.21 and 307,091.17

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Solution

The fourth proportional to 479,078.37, 660,961.21 and 307,091.17 is: 423,678.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,078.37 : 660,961.21 = 307,091.17 : x
  2. Step 2: Convert to fraction form
    479,078.37/660,961.21 = 307,091.17/x
  3. Step 3: Cross multiply
    479,078.37x = 660,961.21 × 307,091.17
  4. Step 4: Simplify right side
    479,078.37x = 202,975,351,040.66
  5. Step 5: Solve for x
    x = 202,975,351,040.66/479,078.37
  6. Step 6: Final answer
    x = 423,678.81

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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.