Home / 309,438-675,236

Finding the Third Proportional to 309,438 and 675,236

Calculator

Solution

The third proportional to 309,438 and 675,236 is: 1,473,457.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,438 : 675,236 = 675,236 : x
  2. Step 2: Convert to fraction form
    309,438/675,236 = 675,236/x
  3. Step 3: Cross multiply
    309,438x = 675,236 × 675,236
  4. Step 4: Simplify right side
    309,438x = 455,943,655,696
  5. Step 5: Solve for x
    x = 455,943,655,696/309,438
  6. Step 6: Final answer
    x = 1,473,457.22

Related Problems

Find third proportional to 154,719 and 337,618
Half scale
Find third proportional to 618,876 and 1,350,472
Double scale
Find third proportional to 309,440 and 675,240
Similar ratio
Find third proportional to 464,157 and 1,012,854
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.