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Finding the Fourth Proportional to 422,653.05, 583,321.02 and 261,559.98

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Solution

The fourth proportional to 422,653.05, 583,321.02 and 261,559.98 is: 360,989.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,653.05 : 583,321.02 = 261,559.98 : x
  2. Step 2: Convert to fraction form
    422,653.05/583,321.02 = 261,559.98/x
  3. Step 3: Cross multiply
    422,653.05x = 583,321.02 × 261,559.98
  4. Step 4: Simplify right side
    422,653.05x = 152,573,434,324.78
  5. Step 5: Solve for x
    x = 152,573,434,324.78/422,653.05
  6. Step 6: Final answer
    x = 360,989.79

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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.