Home / 759,520.35-1,139,391.09-279,977.67

Finding the Fourth Proportional to 759,520.35, 1,139,391.09 and 279,977.67

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Solution

The fourth proportional to 759,520.35, 1,139,391.09 and 279,977.67 is: 420,007.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    759,520.35 : 1,139,391.09 = 279,977.67 : x
  2. Step 2: Convert to fraction form
    759,520.35/1,139,391.09 = 279,977.67/x
  3. Step 3: Cross multiply
    759,520.35x = 1,139,391.09 × 279,977.67
  4. Step 4: Simplify right side
    759,520.35x = 319,004,062,596.96
  5. Step 5: Solve for x
    x = 319,004,062,596.96/759,520.35
  6. Step 6: Final answer
    x = 420,007.26

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1.5x scale

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.