Home / 421,690-670,667

Finding the Third Proportional to 421,690 and 670,667

Calculator

Solution

The third proportional to 421,690 and 670,667 is: 1,066,646.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,690 : 670,667 = 670,667 : x
  2. Step 2: Convert to fraction form
    421,690/670,667 = 670,667/x
  3. Step 3: Cross multiply
    421,690x = 670,667 × 670,667
  4. Step 4: Simplify right side
    421,690x = 449,794,224,889
  5. Step 5: Solve for x
    x = 449,794,224,889/421,690
  6. Step 6: Final answer
    x = 1,066,646.65

Related Problems

Find third proportional to 210,845 and 335,333.50
Half scale
Find third proportional to 843,380 and 1,341,334
Double scale
Find third proportional to 421,692 and 670,670
Similar ratio
Find third proportional to 632,535 and 1,006,000.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.