Home / 189,432-408,378

Finding the Third Proportional to 189,432 and 408,378

Calculator

Solution

The third proportional to 189,432 and 408,378 is: 880,382.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,432 : 408,378 = 408,378 : x
  2. Step 2: Convert to fraction form
    189,432/408,378 = 408,378/x
  3. Step 3: Cross multiply
    189,432x = 408,378 × 408,378
  4. Step 4: Simplify right side
    189,432x = 166,772,590,884
  5. Step 5: Solve for x
    x = 166,772,590,884/189,432
  6. Step 6: Final answer
    x = 880,382.36

Related Problems

Find third proportional to 94,716 and 204,189
Half scale
Find third proportional to 378,864 and 816,756
Double scale
Find third proportional to 189,434 and 408,382
Similar ratio
Find third proportional to 284,148 and 612,567
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.