Home / 405,137-860,215

Finding the Third Proportional to 405,137 and 860,215

Calculator

Solution

The third proportional to 405,137 and 860,215 is: 1,826,468.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,137 : 860,215 = 860,215 : x
  2. Step 2: Convert to fraction form
    405,137/860,215 = 860,215/x
  3. Step 3: Cross multiply
    405,137x = 860,215 × 860,215
  4. Step 4: Simplify right side
    405,137x = 739,969,846,225
  5. Step 5: Solve for x
    x = 739,969,846,225/405,137
  6. Step 6: Final answer
    x = 1,826,468.20

Related Problems

Find third proportional to 202,568.50 and 430,107.50
Half scale
Find third proportional to 810,274 and 1,720,430
Double scale
Find third proportional to 405,139 and 860,219
Similar ratio
Find third proportional to 607,705.50 and 1,290,322.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.