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Finding the Fourth Proportional to 789,751, 1,089,856.38 and 427,174.84

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Solution

The fourth proportional to 789,751, 1,089,856.38 and 427,174.84 is: 589,501.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,751 : 1,089,856.38 = 427,174.84 : x
  2. Step 2: Convert to fraction form
    789,751/1,089,856.38 = 427,174.84/x
  3. Step 3: Cross multiply
    789,751x = 1,089,856.38 × 427,174.84
  4. Step 4: Simplify right side
    789,751x = 465,559,224,749.48
  5. Step 5: Solve for x
    x = 465,559,224,749.48/789,751
  6. Step 6: Final answer
    x = 589,501.28

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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.