Home / 399,700-856,379

Finding the Third Proportional to 399,700 and 856,379

Calculator

Solution

The third proportional to 399,700 and 856,379 is: 1,834,838.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,700 : 856,379 = 856,379 : x
  2. Step 2: Convert to fraction form
    399,700/856,379 = 856,379/x
  3. Step 3: Cross multiply
    399,700x = 856,379 × 856,379
  4. Step 4: Simplify right side
    399,700x = 733,384,991,641
  5. Step 5: Solve for x
    x = 733,384,991,641/399,700
  6. Step 6: Final answer
    x = 1,834,838.61

Related Problems

Find third proportional to 199,850 and 428,189.50
Half scale
Find third proportional to 799,400 and 1,712,758
Double scale
Find third proportional to 399,702 and 856,383
Similar ratio
Find third proportional to 599,550 and 1,284,568.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.