Home / 490,170-770,247

Finding the Third Proportional to 490,170 and 770,247

Calculator

Solution

The third proportional to 490,170 and 770,247 is: 1,210,356.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,170 : 770,247 = 770,247 : x
  2. Step 2: Convert to fraction form
    490,170/770,247 = 770,247/x
  3. Step 3: Cross multiply
    490,170x = 770,247 × 770,247
  4. Step 4: Simplify right side
    490,170x = 593,280,441,009
  5. Step 5: Solve for x
    x = 593,280,441,009/490,170
  6. Step 6: Final answer
    x = 1,210,356.49

Related Problems

Find third proportional to 245,085 and 385,123.50
Half scale
Find third proportional to 980,340 and 1,540,494
Double scale
Find third proportional to 490,172 and 770,250
Similar ratio
Find third proportional to 735,255 and 1,155,370.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.57) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.