Home / 338,475.75-720,420

Finding the Third Proportional to 338,475.75 and 720,420

Calculator

Solution

The third proportional to 338,475.75 and 720,420 is: 1,533,359.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,475.75 : 720,420 = 720,420 : x
  2. Step 2: Convert to fraction form
    338,475.75/720,420 = 720,420/x
  3. Step 3: Cross multiply
    338,475.75x = 720,420 × 720,420
  4. Step 4: Simplify right side
    338,475.75x = 519,004,976,400
  5. Step 5: Solve for x
    x = 519,004,976,400/338,475.75
  6. Step 6: Final answer
    x = 1,533,359.41

Related Problems

Find third proportional to 169,237.88 and 360,210
Half scale
Find third proportional to 676,951.50 and 1,440,840
Double scale
Find third proportional to 338,478 and 720,424
Similar ratio
Find third proportional to 507,713.63 and 1,080,630
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.