Home / 319,914-480,690

Finding the Third Proportional to 319,914 and 480,690

Calculator

Solution

The third proportional to 319,914 and 480,690 is: 722,265.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,914 : 480,690 = 480,690 : x
  2. Step 2: Convert to fraction form
    319,914/480,690 = 480,690/x
  3. Step 3: Cross multiply
    319,914x = 480,690 × 480,690
  4. Step 4: Simplify right side
    319,914x = 231,062,876,100
  5. Step 5: Solve for x
    x = 231,062,876,100/319,914
  6. Step 6: Final answer
    x = 722,265.60

Related Problems

Find third proportional to 159,957 and 240,345
Half scale
Find third proportional to 639,828 and 961,380
Double scale
Find third proportional to 319,916 and 480,693
Similar ratio
Find third proportional to 479,871 and 721,035
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.