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Finding the Fourth Proportional to 685,346.44, 945,779.34 and 379,444

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Solution

The fourth proportional to 685,346.44, 945,779.34 and 379,444 is: 523,633.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,346.44 : 945,779.34 = 379,444 : x
  2. Step 2: Convert to fraction form
    685,346.44/945,779.34 = 379,444/x
  3. Step 3: Cross multiply
    685,346.44x = 945,779.34 × 379,444
  4. Step 4: Simplify right side
    685,346.44x = 358,870,295,886.96
  5. Step 5: Solve for x
    x = 358,870,295,886.96/685,346.44
  6. Step 6: Final answer
    x = 523,633.41

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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.