Home / 818,846.97-1,228,650.87-313,240.80

Finding the Fourth Proportional to 818,846.97, 1,228,650.87 and 313,240.80

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Solution

The fourth proportional to 818,846.97, 1,228,650.87 and 313,240.80 is: 470,006.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    818,846.97 : 1,228,650.87 = 313,240.80 : x
  2. Step 2: Convert to fraction form
    818,846.97/1,228,650.87 = 313,240.80/x
  3. Step 3: Cross multiply
    818,846.97x = 1,228,650.87 × 313,240.80
  4. Step 4: Simplify right side
    818,846.97x = 384,863,581,439.50
  5. Step 5: Solve for x
    x = 384,863,581,439.50/818,846.97
  6. Step 6: Final answer
    x = 470,006.72

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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.