Home / 339,660-435,618

Finding the Third Proportional to 339,660 and 435,618

Calculator

Solution

The third proportional to 339,660 and 435,618 is: 558,685.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,660 : 435,618 = 435,618 : x
  2. Step 2: Convert to fraction form
    339,660/435,618 = 435,618/x
  3. Step 3: Cross multiply
    339,660x = 435,618 × 435,618
  4. Step 4: Simplify right side
    339,660x = 189,763,041,924
  5. Step 5: Solve for x
    x = 189,763,041,924/339,660
  6. Step 6: Final answer
    x = 558,685.28

Related Problems

Find third proportional to 169,830 and 217,809
Half scale
Find third proportional to 679,320 and 871,236
Double scale
Find third proportional to 339,662 and 435,621
Similar ratio
Find third proportional to 509,490 and 653,427
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.28) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.