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Finding the Fourth Proportional to 685,817.22, 946,394.88 and 379,872.96

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Solution

The fourth proportional to 685,817.22, 946,394.88 and 379,872.96 is: 524,206.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,817.22 : 946,394.88 = 379,872.96 : x
  2. Step 2: Convert to fraction form
    685,817.22/946,394.88 = 379,872.96/x
  3. Step 3: Cross multiply
    685,817.22x = 946,394.88 × 379,872.96
  4. Step 4: Simplify right side
    685,817.22x = 359,509,824,394.45
  5. Step 5: Solve for x
    x = 359,509,824,394.45/685,817.22
  6. Step 6: Final answer
    x = 524,206.47

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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.