Home / 189,555-408,486

Finding the Third Proportional to 189,555 and 408,486

Calculator

Solution

The third proportional to 189,555 and 408,486 is: 880,276.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,555 : 408,486 = 408,486 : x
  2. Step 2: Convert to fraction form
    189,555/408,486 = 408,486/x
  3. Step 3: Cross multiply
    189,555x = 408,486 × 408,486
  4. Step 4: Simplify right side
    189,555x = 166,860,812,196
  5. Step 5: Solve for x
    x = 166,860,812,196/189,555
  6. Step 6: Final answer
    x = 880,276.50

Related Problems

Find third proportional to 94,777.50 and 204,243
Half scale
Find third proportional to 379,110 and 816,972
Double scale
Find third proportional to 189,557 and 408,490
Similar ratio
Find third proportional to 284,332.50 and 612,729
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.