Home / 339,818-539,861

Finding the Third Proportional to 339,818 and 539,861

Calculator

Solution

The third proportional to 339,818 and 539,861 is: 857,664.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,818 : 539,861 = 539,861 : x
  2. Step 2: Convert to fraction form
    339,818/539,861 = 539,861/x
  3. Step 3: Cross multiply
    339,818x = 539,861 × 539,861
  4. Step 4: Simplify right side
    339,818x = 291,449,899,321
  5. Step 5: Solve for x
    x = 291,449,899,321/339,818
  6. Step 6: Final answer
    x = 857,664.69

Related Problems

Find third proportional to 169,909 and 269,930.50
Half scale
Find third proportional to 679,636 and 1,079,722
Double scale
Find third proportional to 339,820 and 539,864
Similar ratio
Find third proportional to 509,727 and 809,791.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.