Home / 685,509.37-945,991.31-379,579.17

Finding the Fourth Proportional to 685,509.37, 945,991.31 and 379,579.17

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Solution

The fourth proportional to 685,509.37, 945,991.31 and 379,579.17 is: 523,812.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,509.37 : 945,991.31 = 379,579.17 : x
  2. Step 2: Convert to fraction form
    685,509.37/945,991.31 = 379,579.17/x
  3. Step 3: Cross multiply
    685,509.37x = 945,991.31 × 379,579.17
  4. Step 4: Simplify right side
    685,509.37x = 359,078,594,028.81
  5. Step 5: Solve for x
    x = 359,078,594,028.81/685,509.37
  6. Step 6: Final answer
    x = 523,812.82

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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.