Home / 685,434.64-945,912.36-383,627.92

Finding the Fourth Proportional to 685,434.64, 945,912.36 and 383,627.92

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Solution

The fourth proportional to 685,434.64, 945,912.36 and 383,627.92 is: 529,413.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,434.64 : 945,912.36 = 383,627.92 : x
  2. Step 2: Convert to fraction form
    685,434.64/945,912.36 = 383,627.92/x
  3. Step 3: Cross multiply
    685,434.64x = 945,912.36 × 383,627.92
  4. Step 4: Simplify right side
    685,434.64x = 362,878,391,169.09
  5. Step 5: Solve for x
    x = 362,878,391,169.09/685,434.64
  6. Step 6: Final answer
    x = 529,413.56

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1.5x scale

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.