Home / 291,274-393,530

Finding the Third Proportional to 291,274 and 393,530

Calculator

Solution

The third proportional to 291,274 and 393,530 is: 531,684.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,274 : 393,530 = 393,530 : x
  2. Step 2: Convert to fraction form
    291,274/393,530 = 393,530/x
  3. Step 3: Cross multiply
    291,274x = 393,530 × 393,530
  4. Step 4: Simplify right side
    291,274x = 154,865,860,900
  5. Step 5: Solve for x
    x = 154,865,860,900/291,274
  6. Step 6: Final answer
    x = 531,684.47

Related Problems

Find third proportional to 145,637 and 196,765
Half scale
Find third proportional to 582,548 and 787,060
Double scale
Find third proportional to 291,276 and 393,533
Similar ratio
Find third proportional to 436,911 and 590,295
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.