Home / 286,803-455,515

Finding the Third Proportional to 286,803 and 455,515

Calculator

Solution

The third proportional to 286,803 and 455,515 is: 723,471.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,803 : 455,515 = 455,515 : x
  2. Step 2: Convert to fraction form
    286,803/455,515 = 455,515/x
  3. Step 3: Cross multiply
    286,803x = 455,515 × 455,515
  4. Step 4: Simplify right side
    286,803x = 207,493,915,225
  5. Step 5: Solve for x
    x = 207,493,915,225/286,803
  6. Step 6: Final answer
    x = 723,471.91

Related Problems

Find third proportional to 143,401.50 and 227,757.50
Half scale
Find third proportional to 573,606 and 911,030
Double scale
Find third proportional to 286,805 and 455,518
Similar ratio
Find third proportional to 430,204.50 and 683,272.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.