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Finding the Fourth Proportional to 664,474.64, 916,961.80 and 362,670.80

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Solution

The fourth proportional to 664,474.64, 916,961.80 and 362,670.80 is: 500,478.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,474.64 : 916,961.80 = 362,670.80 : x
  2. Step 2: Convert to fraction form
    664,474.64/916,961.80 = 362,670.80/x
  3. Step 3: Cross multiply
    664,474.64x = 916,961.80 × 362,670.80
  4. Step 4: Simplify right side
    664,474.64x = 332,555,269,575.44
  5. Step 5: Solve for x
    x = 332,555,269,575.44/664,474.64
  6. Step 6: Final answer
    x = 500,478.50

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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.