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Finding the Fourth Proportional to 698,956.56, 964,555 and 397,150.56

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Solution

The fourth proportional to 698,956.56, 964,555 and 397,150.56 is: 548,064.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,956.56 : 964,555 = 397,150.56 : x
  2. Step 2: Convert to fraction form
    698,956.56/964,555 = 397,150.56/x
  3. Step 3: Cross multiply
    698,956.56x = 964,555 × 397,150.56
  4. Step 4: Simplify right side
    698,956.56x = 383,073,558,400.80
  5. Step 5: Solve for x
    x = 383,073,558,400.80/698,956.56
  6. Step 6: Final answer
    x = 548,064.90

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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.