Home / 291,432-393,722

Finding the Third Proportional to 291,432 and 393,722

Calculator

Solution

The third proportional to 291,432 and 393,722 is: 531,914.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,432 : 393,722 = 393,722 : x
  2. Step 2: Convert to fraction form
    291,432/393,722 = 393,722/x
  3. Step 3: Cross multiply
    291,432x = 393,722 × 393,722
  4. Step 4: Simplify right side
    291,432x = 155,017,013,284
  5. Step 5: Solve for x
    x = 155,017,013,284/291,432
  6. Step 6: Final answer
    x = 531,914.87

Related Problems

Find third proportional to 145,716 and 196,861
Half scale
Find third proportional to 582,864 and 787,444
Double scale
Find third proportional to 291,434 and 393,725
Similar ratio
Find third proportional to 437,148 and 590,583
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.