Home / 685,486.03-945,969.96-383,680.03

Finding the Fourth Proportional to 685,486.03, 945,969.96 and 383,680.03

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Solution

The fourth proportional to 685,486.03, 945,969.96 and 383,680.03 is: 529,478.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,486.03 : 945,969.96 = 383,680.03 : x
  2. Step 2: Convert to fraction form
    685,486.03/945,969.96 = 383,680.03/x
  3. Step 3: Cross multiply
    685,486.03x = 945,969.96 × 383,680.03
  4. Step 4: Simplify right side
    685,486.03x = 362,949,782,631.90
  5. Step 5: Solve for x
    x = 362,949,782,631.90/685,486.03
  6. Step 6: Final answer
    x = 529,478.02

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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.