Home / 686,921.53-948,065.18-381,096.43

Finding the Fourth Proportional to 686,921.53, 948,065.18 and 381,096.43

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Solution

The fourth proportional to 686,921.53, 948,065.18 and 381,096.43 is: 525,976.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,921.53 : 948,065.18 = 381,096.43 : x
  2. Step 2: Convert to fraction form
    686,921.53/948,065.18 = 381,096.43/x
  3. Step 3: Cross multiply
    686,921.53x = 948,065.18 × 381,096.43
  4. Step 4: Simplify right side
    686,921.53x = 361,304,253,599.83
  5. Step 5: Solve for x
    x = 361,304,253,599.83/686,921.53
  6. Step 6: Final answer
    x = 525,976.03

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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.