Home / 685,423.09-1,028,349.72-412,183.78

Finding the Fourth Proportional to 685,423.09, 1,028,349.72 and 412,183.78

Calculator

Solution

The fourth proportional to 685,423.09, 1,028,349.72 and 412,183.78 is: 618,405.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,423.09 : 1,028,349.72 = 412,183.78 : x
  2. Step 2: Convert to fraction form
    685,423.09/1,028,349.72 = 412,183.78/x
  3. Step 3: Cross multiply
    685,423.09x = 1,028,349.72 × 412,183.78
  4. Step 4: Simplify right side
    685,423.09x = 423,869,074,751.54
  5. Step 5: Solve for x
    x = 423,869,074,751.54/685,423.09
  6. Step 6: Final answer
    x = 618,405.01

Related Problems

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.