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Finding the Fourth Proportional to 850,999, 1,276,717.26 and 318,527.68

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Solution

The fourth proportional to 850,999, 1,276,717.26 and 318,527.68 is: 477,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    850,999 : 1,276,717.26 = 318,527.68 : x
  2. Step 2: Convert to fraction form
    850,999/1,276,717.26 = 318,527.68/x
  3. Step 3: Cross multiply
    850,999x = 1,276,717.26 × 318,527.68
  4. Step 4: Simplify right side
    850,999x = 406,669,786,843.76
  5. Step 5: Solve for x
    x = 406,669,786,843.76/850,999
  6. Step 6: Final answer
    x = 477,873.40

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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.