Home / 318,836-680,332

Finding the Third Proportional to 318,836 and 680,332

Calculator

Solution

The third proportional to 318,836 and 680,332 is: 1,451,691.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,836 : 680,332 = 680,332 : x
  2. Step 2: Convert to fraction form
    318,836/680,332 = 680,332/x
  3. Step 3: Cross multiply
    318,836x = 680,332 × 680,332
  4. Step 4: Simplify right side
    318,836x = 462,851,630,224
  5. Step 5: Solve for x
    x = 462,851,630,224/318,836
  6. Step 6: Final answer
    x = 1,451,691.87

Related Problems

Find third proportional to 159,418 and 340,166
Half scale
Find third proportional to 637,672 and 1,360,664
Double scale
Find third proportional to 318,838 and 680,336
Similar ratio
Find third proportional to 478,254 and 1,020,498
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.