Home / 319,984-687,454

Finding the Third Proportional to 319,984 and 687,454

Calculator

Solution

The third proportional to 319,984 and 687,454 is: 1,476,926.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,984 : 687,454 = 687,454 : x
  2. Step 2: Convert to fraction form
    319,984/687,454 = 687,454/x
  3. Step 3: Cross multiply
    319,984x = 687,454 × 687,454
  4. Step 4: Simplify right side
    319,984x = 472,593,002,116
  5. Step 5: Solve for x
    x = 472,593,002,116/319,984
  6. Step 6: Final answer
    x = 1,476,926.98

Related Problems

Find third proportional to 159,992 and 343,727
Half scale
Find third proportional to 639,968 and 1,374,908
Double scale
Find third proportional to 319,986 and 687,458
Similar ratio
Find third proportional to 479,976 and 1,031,181
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.