Home / 266,607-408,820

Finding the Third Proportional to 266,607 and 408,820

Calculator

Solution

The third proportional to 266,607 and 408,820 is: 626,891.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,607 : 408,820 = 408,820 : x
  2. Step 2: Convert to fraction form
    266,607/408,820 = 408,820/x
  3. Step 3: Cross multiply
    266,607x = 408,820 × 408,820
  4. Step 4: Simplify right side
    266,607x = 167,133,792,400
  5. Step 5: Solve for x
    x = 167,133,792,400/266,607
  6. Step 6: Final answer
    x = 626,891.99

Related Problems

Find third proportional to 133,303.50 and 204,410
Half scale
Find third proportional to 533,214 and 817,640
Double scale
Find third proportional to 266,609 and 408,823
Similar ratio
Find third proportional to 399,910.50 and 613,230
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.