Home / 318,064-430,440

Finding the Third Proportional to 318,064 and 430,440

Calculator

Solution

The third proportional to 318,064 and 430,440 is: 582,519.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,064 : 430,440 = 430,440 : x
  2. Step 2: Convert to fraction form
    318,064/430,440 = 430,440/x
  3. Step 3: Cross multiply
    318,064x = 430,440 × 430,440
  4. Step 4: Simplify right side
    318,064x = 185,278,593,600
  5. Step 5: Solve for x
    x = 185,278,593,600/318,064
  6. Step 6: Final answer
    x = 582,519.85

Related Problems

Find third proportional to 159,032 and 215,220
Half scale
Find third proportional to 636,128 and 860,880
Double scale
Find third proportional to 318,066 and 430,443
Similar ratio
Find third proportional to 477,096 and 645,660
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.