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Finding the Fourth Proportional to 425,268.12, 637,903.06 and 399,286.52

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Solution

The fourth proportional to 425,268.12, 637,903.06 and 399,286.52 is: 598,930.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,268.12 : 637,903.06 = 399,286.52 : x
  2. Step 2: Convert to fraction form
    425,268.12/637,903.06 = 399,286.52/x
  3. Step 3: Cross multiply
    425,268.12x = 637,903.06 × 399,286.52
  4. Step 4: Simplify right side
    425,268.12x = 254,706,092,924.75
  5. Step 5: Solve for x
    x = 254,706,092,924.75/425,268.12
  6. Step 6: Final answer
    x = 598,930.61

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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.