Home / 685,318.10-945,837.95-394,874.04

Finding the Fourth Proportional to 685,318.10, 945,837.95 and 394,874.04

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Solution

The fourth proportional to 685,318.10, 945,837.95 and 394,874.04 is: 544,983.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,318.10 : 945,837.95 = 394,874.04 : x
  2. Step 2: Convert to fraction form
    685,318.10/945,837.95 = 394,874.04/x
  3. Step 3: Cross multiply
    685,318.10x = 945,837.95 × 394,874.04
  4. Step 4: Simplify right side
    685,318.10x = 373,486,850,527.45
  5. Step 5: Solve for x
    x = 373,486,850,527.45/685,318.10
  6. Step 6: Final answer
    x = 544,983.20

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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.