Home / 340,493-515,474

Finding the Third Proportional to 340,493 and 515,474

Calculator

Solution

The third proportional to 340,493 and 515,474 is: 780,378.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,493 : 515,474 = 515,474 : x
  2. Step 2: Convert to fraction form
    340,493/515,474 = 515,474/x
  3. Step 3: Cross multiply
    340,493x = 515,474 × 515,474
  4. Step 4: Simplify right side
    340,493x = 265,713,444,676
  5. Step 5: Solve for x
    x = 265,713,444,676/340,493
  6. Step 6: Final answer
    x = 780,378.58

Related Problems

Find third proportional to 170,246.50 and 257,737
Half scale
Find third proportional to 680,986 and 1,030,948
Double scale
Find third proportional to 340,495 and 515,477
Similar ratio
Find third proportional to 510,739.50 and 773,211
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.