Home / 128,907-277,563

Finding the Third Proportional to 128,907 and 277,563

Calculator

Solution

The third proportional to 128,907 and 277,563 is: 597,649.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,907 : 277,563 = 277,563 : x
  2. Step 2: Convert to fraction form
    128,907/277,563 = 277,563/x
  3. Step 3: Cross multiply
    128,907x = 277,563 × 277,563
  4. Step 4: Simplify right side
    128,907x = 77,041,218,969
  5. Step 5: Solve for x
    x = 77,041,218,969/128,907
  6. Step 6: Final answer
    x = 597,649.62

Related Problems

Find third proportional to 64,453.50 and 138,781.50
Half scale
Find third proportional to 257,814 and 555,126
Double scale
Find third proportional to 128,909 and 277,567
Similar ratio
Find third proportional to 193,360.50 and 416,344.50
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.