Home / 319,221-685,482

Finding the Third Proportional to 319,221 and 685,482

Calculator

Solution

The third proportional to 319,221 and 685,482 is: 1,471,975.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,221 : 685,482 = 685,482 : x
  2. Step 2: Convert to fraction form
    319,221/685,482 = 685,482/x
  3. Step 3: Cross multiply
    319,221x = 685,482 × 685,482
  4. Step 4: Simplify right side
    319,221x = 469,885,572,324
  5. Step 5: Solve for x
    x = 469,885,572,324/319,221
  6. Step 6: Final answer
    x = 1,471,975.75

Related Problems

Find third proportional to 159,610.50 and 342,741
Half scale
Find third proportional to 638,442 and 1,370,964
Double scale
Find third proportional to 319,223 and 685,486
Similar ratio
Find third proportional to 478,831.50 and 1,028,223
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.