Home / 319,080-690,992

Finding the Third Proportional to 319,080 and 690,992

Calculator

Solution

The third proportional to 319,080 and 690,992 is: 1,496,395.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,080 : 690,992 = 690,992 : x
  2. Step 2: Convert to fraction form
    319,080/690,992 = 690,992/x
  3. Step 3: Cross multiply
    319,080x = 690,992 × 690,992
  4. Step 4: Simplify right side
    319,080x = 477,469,944,064
  5. Step 5: Solve for x
    x = 477,469,944,064/319,080
  6. Step 6: Final answer
    x = 1,496,395.71

Related Problems

Find third proportional to 159,540 and 345,496
Half scale
Find third proportional to 638,160 and 1,381,984
Double scale
Find third proportional to 319,082 and 690,996
Similar ratio
Find third proportional to 478,620 and 1,036,488
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.