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Finding the Fourth Proportional to 685,808.22, 946,382.46 and 379,863.96

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Solution

The fourth proportional to 685,808.22, 946,382.46 and 379,863.96 is: 524,194.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,808.22 : 946,382.46 = 379,863.96 : x
  2. Step 2: Convert to fraction form
    685,808.22/946,382.46 = 379,863.96/x
  3. Step 3: Cross multiply
    685,808.22x = 946,382.46 × 379,863.96
  4. Step 4: Simplify right side
    685,808.22x = 359,496,588,930.14
  5. Step 5: Solve for x
    x = 359,496,588,930.14/685,808.22
  6. Step 6: Final answer
    x = 524,194.05

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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.