Home / 378,390-585,909

Finding the Third Proportional to 378,390 and 585,909

Calculator

Solution

The third proportional to 378,390 and 585,909 is: 907,236.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,390 : 585,909 = 585,909 : x
  2. Step 2: Convert to fraction form
    378,390/585,909 = 585,909/x
  3. Step 3: Cross multiply
    378,390x = 585,909 × 585,909
  4. Step 4: Simplify right side
    378,390x = 343,289,356,281
  5. Step 5: Solve for x
    x = 343,289,356,281/378,390
  6. Step 6: Final answer
    x = 907,236.86

Related Problems

Find third proportional to 189,195 and 292,954.50
Half scale
Find third proportional to 756,780 and 1,171,818
Double scale
Find third proportional to 378,392 and 585,912
Similar ratio
Find third proportional to 567,585 and 878,863.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.