Home / 685,432.14-945,908.91-383,625.42

Finding the Fourth Proportional to 685,432.14, 945,908.91 and 383,625.42

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Solution

The fourth proportional to 685,432.14, 945,908.91 and 383,625.42 is: 529,410.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,432.14 : 945,908.91 = 383,625.42 : x
  2. Step 2: Convert to fraction form
    685,432.14/945,908.91 = 383,625.42/x
  3. Step 3: Cross multiply
    685,432.14x = 945,908.91 × 383,625.42
  4. Step 4: Simplify right side
    685,432.14x = 362,874,702,880.49
  5. Step 5: Solve for x
    x = 362,874,702,880.49/685,432.14
  6. Step 6: Final answer
    x = 529,410.11

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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.