Home / 393,876-578,410

Finding the Third Proportional to 393,876 and 578,410

Calculator

Solution

The third proportional to 393,876 and 578,410 is: 849,399.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,876 : 578,410 = 578,410 : x
  2. Step 2: Convert to fraction form
    393,876/578,410 = 578,410/x
  3. Step 3: Cross multiply
    393,876x = 578,410 × 578,410
  4. Step 4: Simplify right side
    393,876x = 334,558,128,100
  5. Step 5: Solve for x
    x = 334,558,128,100/393,876
  6. Step 6: Final answer
    x = 849,399.63

Related Problems

Find third proportional to 196,938 and 289,205
Half scale
Find third proportional to 787,752 and 1,156,820
Double scale
Find third proportional to 393,878 and 578,413
Similar ratio
Find third proportional to 590,814 and 867,615
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.