Home / 348,438-490,686

Finding the Third Proportional to 348,438 and 490,686

Calculator

Solution

The third proportional to 348,438 and 490,686 is: 691,006.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,438 : 490,686 = 490,686 : x
  2. Step 2: Convert to fraction form
    348,438/490,686 = 490,686/x
  3. Step 3: Cross multiply
    348,438x = 490,686 × 490,686
  4. Step 4: Simplify right side
    348,438x = 240,772,750,596
  5. Step 5: Solve for x
    x = 240,772,750,596/348,438
  6. Step 6: Final answer
    x = 691,006.01

Related Problems

Find third proportional to 174,219 and 245,343
Half scale
Find third proportional to 696,876 and 981,372
Double scale
Find third proportional to 348,440 and 490,689
Similar ratio
Find third proportional to 522,657 and 736,029
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.