Home / 685,219.42-945,591.34-379,289.24

Finding the Fourth Proportional to 685,219.42, 945,591.34 and 379,289.24

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Solution

The fourth proportional to 685,219.42, 945,591.34 and 379,289.24 is: 523,412.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,219.42 : 945,591.34 = 379,289.24 : x
  2. Step 2: Convert to fraction form
    685,219.42/945,591.34 = 379,289.24/x
  3. Step 3: Cross multiply
    685,219.42x = 945,591.34 × 379,289.24
  4. Step 4: Simplify right side
    685,219.42x = 358,652,615,971.23
  5. Step 5: Solve for x
    x = 358,652,615,971.23/685,219.42
  6. Step 6: Final answer
    x = 523,412.80

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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.