Home / 310,437-678,996

Finding the Third Proportional to 310,437 and 678,996

Calculator

Solution

The third proportional to 310,437 and 678,996 is: 1,485,117.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,437 : 678,996 = 678,996 : x
  2. Step 2: Convert to fraction form
    310,437/678,996 = 678,996/x
  3. Step 3: Cross multiply
    310,437x = 678,996 × 678,996
  4. Step 4: Simplify right side
    310,437x = 461,035,568,016
  5. Step 5: Solve for x
    x = 461,035,568,016/310,437
  6. Step 6: Final answer
    x = 1,485,117.97

Related Problems

Find third proportional to 155,218.50 and 339,498
Half scale
Find third proportional to 620,874 and 1,357,992
Double scale
Find third proportional to 310,439 and 679,000
Similar ratio
Find third proportional to 465,655.50 and 1,018,494
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.