Home / 330,137-686,104

Finding the Third Proportional to 330,137 and 686,104

Calculator

Solution

The third proportional to 330,137 and 686,104 is: 1,425,888.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,137 : 686,104 = 686,104 : x
  2. Step 2: Convert to fraction form
    330,137/686,104 = 686,104/x
  3. Step 3: Cross multiply
    330,137x = 686,104 × 686,104
  4. Step 4: Simplify right side
    330,137x = 470,738,698,816
  5. Step 5: Solve for x
    x = 470,738,698,816/330,137
  6. Step 6: Final answer
    x = 1,425,888.95

Related Problems

Find third proportional to 165,068.50 and 343,052
Half scale
Find third proportional to 660,274 and 1,372,208
Double scale
Find third proportional to 330,139 and 686,108
Similar ratio
Find third proportional to 495,205.50 and 1,029,156
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.