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Finding the Fourth Proportional to 682,991.87, 942,560.31 and 377,111.67

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Solution

The fourth proportional to 682,991.87, 942,560.31 and 377,111.67 is: 520,431.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,991.87 : 942,560.31 = 377,111.67 : x
  2. Step 2: Convert to fraction form
    682,991.87/942,560.31 = 377,111.67/x
  3. Step 3: Cross multiply
    682,991.87x = 942,560.31 × 377,111.67
  4. Step 4: Simplify right side
    682,991.87x = 355,450,490,459.39
  5. Step 5: Solve for x
    x = 355,450,490,459.39/682,991.87
  6. Step 6: Final answer
    x = 520,431.51

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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.