Home / 1,018.85-1,405.89-625.77

Finding the Fourth Proportional to 1,018.85, 1,405.89 and 625.77

Calculator

Solution

The fourth proportional to 1,018.85, 1,405.89 and 625.77 is: 863.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,018.85 : 1,405.89 = 625.77 : x
  2. Step 2: Convert to fraction form
    1,018.85/1,405.89 = 625.77/x
  3. Step 3: Cross multiply
    1,018.85x = 1,405.89 × 625.77
  4. Step 4: Simplify right side
    1,018.85x = 879,763.79
  5. Step 5: Solve for x
    x = 879,763.79/1,018.85
  6. Step 6: Final answer
    x = 863.49

Related Problems

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.