Home / 317,400-661,104

Finding the Third Proportional to 317,400 and 661,104

Calculator

Solution

The third proportional to 317,400 and 661,104 is: 1,376,995.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,400 : 661,104 = 661,104 : x
  2. Step 2: Convert to fraction form
    317,400/661,104 = 661,104/x
  3. Step 3: Cross multiply
    317,400x = 661,104 × 661,104
  4. Step 4: Simplify right side
    317,400x = 437,058,498,816
  5. Step 5: Solve for x
    x = 437,058,498,816/317,400
  6. Step 6: Final answer
    x = 1,376,995.90

Related Problems

Find third proportional to 158,700 and 330,552
Half scale
Find third proportional to 634,800 and 1,322,208
Double scale
Find third proportional to 317,402 and 661,108
Similar ratio
Find third proportional to 476,100 and 991,656
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.