Home / 685,976.34-946,622.22-395,600.15

Finding the Fourth Proportional to 685,976.34, 946,622.22 and 395,600.15

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Solution

The fourth proportional to 685,976.34, 946,622.22 and 395,600.15 is: 545,913.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,976.34 : 946,622.22 = 395,600.15 : x
  2. Step 2: Convert to fraction form
    685,976.34/946,622.22 = 395,600.15/x
  3. Step 3: Cross multiply
    685,976.34x = 946,622.22 × 395,600.15
  4. Step 4: Simplify right side
    685,976.34x = 374,483,894,591.89
  5. Step 5: Solve for x
    x = 374,483,894,591.89/685,976.34
  6. Step 6: Final answer
    x = 545,913.72

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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.