Home / 775,120.80-1,161,977.84-691,140

Finding the Fourth Proportional to 775,120.80, 1,161,977.84 and 691,140

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Solution

The fourth proportional to 775,120.80, 1,161,977.84 and 691,140 is: 1,036,082.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    775,120.80 : 1,161,977.84 = 691,140 : x
  2. Step 2: Convert to fraction form
    775,120.80/1,161,977.84 = 691,140/x
  3. Step 3: Cross multiply
    775,120.80x = 1,161,977.84 × 691,140
  4. Step 4: Simplify right side
    775,120.80x = 803,089,364,337.60
  5. Step 5: Solve for x
    x = 803,089,364,337.60/775,120.80
  6. Step 6: Final answer
    x = 1,036,082.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.