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Finding the Fourth Proportional to 483,904.56, 667,825.70 and 290,319.55

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Solution

The fourth proportional to 483,904.56, 667,825.70 and 290,319.55 is: 400,663.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,904.56 : 667,825.70 = 290,319.55 : x
  2. Step 2: Convert to fraction form
    483,904.56/667,825.70 = 290,319.55/x
  3. Step 3: Cross multiply
    483,904.56x = 667,825.70 × 290,319.55
  4. Step 4: Simplify right side
    483,904.56x = 193,882,856,702.44
  5. Step 5: Solve for x
    x = 193,882,856,702.44/483,904.56
  6. Step 6: Final answer
    x = 400,663.42

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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.