Home / 393,416-577,215

Finding the Third Proportional to 393,416 and 577,215

Calculator

Solution

The third proportional to 393,416 and 577,215 is: 846,882.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,416 : 577,215 = 577,215 : x
  2. Step 2: Convert to fraction form
    393,416/577,215 = 577,215/x
  3. Step 3: Cross multiply
    393,416x = 577,215 × 577,215
  4. Step 4: Simplify right side
    393,416x = 333,177,156,225
  5. Step 5: Solve for x
    x = 333,177,156,225/393,416
  6. Step 6: Final answer
    x = 846,882.58

Related Problems

Find third proportional to 196,708 and 288,607.50
Half scale
Find third proportional to 786,832 and 1,154,430
Double scale
Find third proportional to 393,418 and 577,218
Similar ratio
Find third proportional to 590,124 and 865,822.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.