Home / 311,848-685,068

Finding the Third Proportional to 311,848 and 685,068

Calculator

Solution

The third proportional to 311,848 and 685,068 is: 1,504,958.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,848 : 685,068 = 685,068 : x
  2. Step 2: Convert to fraction form
    311,848/685,068 = 685,068/x
  3. Step 3: Cross multiply
    311,848x = 685,068 × 685,068
  4. Step 4: Simplify right side
    311,848x = 469,318,164,624
  5. Step 5: Solve for x
    x = 469,318,164,624/311,848
  6. Step 6: Final answer
    x = 1,504,958.07

Related Problems

Find third proportional to 155,924 and 342,534
Half scale
Find third proportional to 623,696 and 1,370,136
Double scale
Find third proportional to 311,850 and 685,072
Similar ratio
Find third proportional to 467,772 and 1,027,602
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.