Home / 207,014-421,639

Finding the Third Proportional to 207,014 and 421,639

Calculator

Solution

The third proportional to 207,014 and 421,639 is: 858,779.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,014 : 421,639 = 421,639 : x
  2. Step 2: Convert to fraction form
    207,014/421,639 = 421,639/x
  3. Step 3: Cross multiply
    207,014x = 421,639 × 421,639
  4. Step 4: Simplify right side
    207,014x = 177,779,446,321
  5. Step 5: Solve for x
    x = 177,779,446,321/207,014
  6. Step 6: Final answer
    x = 858,779.82

Related Problems

Find third proportional to 103,507 and 210,819.50
Half scale
Find third proportional to 414,028 and 843,278
Double scale
Find third proportional to 207,016 and 421,643
Similar ratio
Find third proportional to 310,521 and 632,458.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.