Home / 678,722-1,340,313

Finding the Third Proportional to 678,722 and 1,340,313

Calculator

Solution

The third proportional to 678,722 and 1,340,313 is: 2,646,796.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,722 : 1,340,313 = 1,340,313 : x
  2. Step 2: Convert to fraction form
    678,722/1,340,313 = 1,340,313/x
  3. Step 3: Cross multiply
    678,722x = 1,340,313 × 1,340,313
  4. Step 4: Simplify right side
    678,722x = 1,796,438,937,969
  5. Step 5: Solve for x
    x = 1,796,438,937,969/678,722
  6. Step 6: Final answer
    x = 2,646,796.39

Related Problems

Find third proportional to 339,361 and 670,156.50
Half scale
Find third proportional to 1,357,444 and 2,680,626
Double scale
Find third proportional to 678,724 and 1,340,317
Similar ratio
Find third proportional to 1,018,083 and 2,010,469.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.