Home / 277,039-429,815

Finding the Third Proportional to 277,039 and 429,815

Calculator

Solution

The third proportional to 277,039 and 429,815 is: 666,840.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    277,039 : 429,815 = 429,815 : x
  2. Step 2: Convert to fraction form
    277,039/429,815 = 429,815/x
  3. Step 3: Cross multiply
    277,039x = 429,815 × 429,815
  4. Step 4: Simplify right side
    277,039x = 184,740,934,225
  5. Step 5: Solve for x
    x = 184,740,934,225/277,039
  6. Step 6: Final answer
    x = 666,840.89

Related Problems

Find third proportional to 138,519.50 and 214,907.50
Half scale
Find third proportional to 554,078 and 859,630
Double scale
Find third proportional to 277,041 and 429,818
Similar ratio
Find third proportional to 415,558.50 and 644,722.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.