Home / 389,614-839,412

Finding the Third Proportional to 389,614 and 839,412

Calculator

Solution

The third proportional to 389,614 and 839,412 is: 1,808,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,614 : 839,412 = 839,412 : x
  2. Step 2: Convert to fraction form
    389,614/839,412 = 839,412/x
  3. Step 3: Cross multiply
    389,614x = 839,412 × 839,412
  4. Step 4: Simplify right side
    389,614x = 704,612,505,744
  5. Step 5: Solve for x
    x = 704,612,505,744/389,614
  6. Step 6: Final answer
    x = 1,808,488.67

Related Problems

Find third proportional to 194,807 and 419,706
Half scale
Find third proportional to 779,228 and 1,678,824
Double scale
Find third proportional to 389,616 and 839,416
Similar ratio
Find third proportional to 584,421 and 1,259,118
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.