Home / 685,424.64-945,898.56-383,617.92

Finding the Fourth Proportional to 685,424.64, 945,898.56 and 383,617.92

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Solution

The fourth proportional to 685,424.64, 945,898.56 and 383,617.92 is: 529,399.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,424.64 : 945,898.56 = 383,617.92 : x
  2. Step 2: Convert to fraction form
    685,424.64/945,898.56 = 383,617.92/x
  3. Step 3: Cross multiply
    685,424.64x = 945,898.56 × 383,617.92
  4. Step 4: Simplify right side
    685,424.64x = 362,863,638,118.20
  5. Step 5: Solve for x
    x = 362,863,638,118.20/685,424.64
  6. Step 6: Final answer
    x = 529,399.76

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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.