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Finding the Fourth Proportional to 664,422.40, 996,633.60 and 265,124.80

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Solution

The fourth proportional to 664,422.40, 996,633.60 and 265,124.80 is: 397,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,422.40 : 996,633.60 = 265,124.80 : x
  2. Step 2: Convert to fraction form
    664,422.40/996,633.60 = 265,124.80/x
  3. Step 3: Cross multiply
    664,422.40x = 996,633.60 × 265,124.80
  4. Step 4: Simplify right side
    664,422.40x = 264,232,283,873.28
  5. Step 5: Solve for x
    x = 264,232,283,873.28/664,422.40
  6. Step 6: Final answer
    x = 397,687.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.