Home / 457,845.54-631,749.81-305,111.73

Finding the Fourth Proportional to 457,845.54, 631,749.81 and 305,111.73

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Solution

The fourth proportional to 457,845.54, 631,749.81 and 305,111.73 is: 421,002.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    457,845.54 : 631,749.81 = 305,111.73 : x
  2. Step 2: Convert to fraction form
    457,845.54/631,749.81 = 305,111.73/x
  3. Step 3: Cross multiply
    457,845.54x = 631,749.81 × 305,111.73
  4. Step 4: Simplify right side
    457,845.54x = 192,754,277,456.27
  5. Step 5: Solve for x
    x = 192,754,277,456.27/457,845.54
  6. Step 6: Final answer
    x = 421,002.85

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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.