Home / 318,008-430,354

Finding the Third Proportional to 318,008 and 430,354

Calculator

Solution

The third proportional to 318,008 and 430,354 is: 582,389.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,008 : 430,354 = 430,354 : x
  2. Step 2: Convert to fraction form
    318,008/430,354 = 430,354/x
  3. Step 3: Cross multiply
    318,008x = 430,354 × 430,354
  4. Step 4: Simplify right side
    318,008x = 185,204,565,316
  5. Step 5: Solve for x
    x = 185,204,565,316/318,008
  6. Step 6: Final answer
    x = 582,389.64

Related Problems

Find third proportional to 159,004 and 215,177
Half scale
Find third proportional to 636,016 and 860,708
Double scale
Find third proportional to 318,010 and 430,357
Similar ratio
Find third proportional to 477,012 and 645,531
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.