Home / 685,430.64-945,906.84-383,623.92

Finding the Fourth Proportional to 685,430.64, 945,906.84 and 383,623.92

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Solution

The fourth proportional to 685,430.64, 945,906.84 and 383,623.92 is: 529,408.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,430.64 : 945,906.84 = 383,623.92 : x
  2. Step 2: Convert to fraction form
    685,430.64/945,906.84 = 383,623.92/x
  3. Step 3: Cross multiply
    685,430.64x = 945,906.84 × 383,623.92
  4. Step 4: Simplify right side
    685,430.64x = 362,872,489,915.61
  5. Step 5: Solve for x
    x = 362,872,489,915.61/685,430.64
  6. Step 6: Final answer
    x = 529,408.04

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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.