Home / 714,433.20-985,928.04-392,137.44

Finding the Fourth Proportional to 714,433.20, 985,928.04 and 392,137.44

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Solution

The fourth proportional to 714,433.20, 985,928.04 and 392,137.44 is: 541,155.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,433.20 : 985,928.04 = 392,137.44 : x
  2. Step 2: Convert to fraction form
    714,433.20/985,928.04 = 392,137.44/x
  3. Step 3: Cross multiply
    714,433.20x = 985,928.04 × 392,137.44
  4. Step 4: Simplify right side
    714,433.20x = 386,619,297,629.82
  5. Step 5: Solve for x
    x = 386,619,297,629.82/714,433.20
  6. Step 6: Final answer
    x = 541,155.28

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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.