Home / 389,288-839,344

Finding the Third Proportional to 389,288 and 839,344

Calculator

Solution

The third proportional to 389,288 and 839,344 is: 1,809,709.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,288 : 839,344 = 839,344 : x
  2. Step 2: Convert to fraction form
    389,288/839,344 = 839,344/x
  3. Step 3: Cross multiply
    389,288x = 839,344 × 839,344
  4. Step 4: Simplify right side
    389,288x = 704,498,350,336
  5. Step 5: Solve for x
    x = 704,498,350,336/389,288
  6. Step 6: Final answer
    x = 1,809,709.91

Related Problems

Find third proportional to 194,644 and 419,672
Half scale
Find third proportional to 778,576 and 1,678,688
Double scale
Find third proportional to 389,290 and 839,348
Similar ratio
Find third proportional to 583,932 and 1,259,016
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.