Home / 389,420-568,812

Finding the Third Proportional to 389,420 and 568,812

Calculator

Solution

The third proportional to 389,420 and 568,812 is: 830,843.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,420 : 568,812 = 568,812 : x
  2. Step 2: Convert to fraction form
    389,420/568,812 = 568,812/x
  3. Step 3: Cross multiply
    389,420x = 568,812 × 568,812
  4. Step 4: Simplify right side
    389,420x = 323,547,091,344
  5. Step 5: Solve for x
    x = 323,547,091,344/389,420
  6. Step 6: Final answer
    x = 830,843.54

Related Problems

Find third proportional to 194,710 and 284,406
Half scale
Find third proportional to 778,840 and 1,137,624
Double scale
Find third proportional to 389,422 and 568,815
Similar ratio
Find third proportional to 584,130 and 853,218
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.