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Finding the Fourth Proportional to 858,347.60, 1,286,599.80 and 325,662.80

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Solution

The fourth proportional to 858,347.60, 1,286,599.80 and 325,662.80 is: 488,144.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,347.60 : 1,286,599.80 = 325,662.80 : x
  2. Step 2: Convert to fraction form
    858,347.60/1,286,599.80 = 325,662.80/x
  3. Step 3: Cross multiply
    858,347.60x = 1,286,599.80 × 325,662.80
  4. Step 4: Simplify right side
    858,347.60x = 418,997,693,347.44
  5. Step 5: Solve for x
    x = 418,997,693,347.44/858,347.60
  6. Step 6: Final answer
    x = 488,144.54

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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.