Home / 328,239-679,239

Finding the Third Proportional to 328,239 and 679,239

Calculator

Solution

The third proportional to 328,239 and 679,239 is: 1,405,578.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,239 : 679,239 = 679,239 : x
  2. Step 2: Convert to fraction form
    328,239/679,239 = 679,239/x
  3. Step 3: Cross multiply
    328,239x = 679,239 × 679,239
  4. Step 4: Simplify right side
    328,239x = 461,365,619,121
  5. Step 5: Solve for x
    x = 461,365,619,121/328,239
  6. Step 6: Final answer
    x = 1,405,578.31

Related Problems

Find third proportional to 164,119.50 and 339,619.50
Half scale
Find third proportional to 656,478 and 1,358,478
Double scale
Find third proportional to 328,241 and 679,243
Similar ratio
Find third proportional to 492,358.50 and 1,018,858.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.