Home / 297,831-642,315

Finding the Third Proportional to 297,831 and 642,315

Calculator

Solution

The third proportional to 297,831 and 642,315 is: 1,385,243.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    297,831 : 642,315 = 642,315 : x
  2. Step 2: Convert to fraction form
    297,831/642,315 = 642,315/x
  3. Step 3: Cross multiply
    297,831x = 642,315 × 642,315
  4. Step 4: Simplify right side
    297,831x = 412,568,559,225
  5. Step 5: Solve for x
    x = 412,568,559,225/297,831
  6. Step 6: Final answer
    x = 1,385,243.84

Related Problems

Find third proportional to 148,915.50 and 321,157.50
Half scale
Find third proportional to 595,662 and 1,284,630
Double scale
Find third proportional to 297,833 and 642,319
Similar ratio
Find third proportional to 446,746.50 and 963,472.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.