Home / 818,879.40-1,229,586.30-445,631.40

Finding the Fourth Proportional to 818,879.40, 1,229,586.30 and 445,631.40

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Solution

The fourth proportional to 818,879.40, 1,229,586.30 and 445,631.40 is: 669,136.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,879.40 : 1,229,586.30 = 445,631.40 : x
  2. Step 2: Convert to fraction form
    818,879.40/1,229,586.30 = 445,631.40/x
  3. Step 3: Cross multiply
    818,879.40x = 1,229,586.30 × 445,631.40
  4. Step 4: Simplify right side
    818,879.40x = 547,942,264,289.82
  5. Step 5: Solve for x
    x = 547,942,264,289.82/818,879.40
  6. Step 6: Final answer
    x = 669,136.71

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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.