Home / 316,276-680,909

Finding the Third Proportional to 316,276 and 680,909

Calculator

Solution

The third proportional to 316,276 and 680,909 is: 1,465,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,276 : 680,909 = 680,909 : x
  2. Step 2: Convert to fraction form
    316,276/680,909 = 680,909/x
  3. Step 3: Cross multiply
    316,276x = 680,909 × 680,909
  4. Step 4: Simplify right side
    316,276x = 463,637,066,281
  5. Step 5: Solve for x
    x = 463,637,066,281/316,276
  6. Step 6: Final answer
    x = 1,465,925.54

Related Problems

Find third proportional to 158,138 and 340,454.50
Half scale
Find third proportional to 632,552 and 1,361,818
Double scale
Find third proportional to 316,278 and 680,913
Similar ratio
Find third proportional to 474,414 and 1,021,363.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.