Home / 381,684-518,365

Finding the Third Proportional to 381,684 and 518,365

Calculator

Solution

The third proportional to 381,684 and 518,365 is: 703,991.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,684 : 518,365 = 518,365 : x
  2. Step 2: Convert to fraction form
    381,684/518,365 = 518,365/x
  3. Step 3: Cross multiply
    381,684x = 518,365 × 518,365
  4. Step 4: Simplify right side
    381,684x = 268,702,273,225
  5. Step 5: Solve for x
    x = 268,702,273,225/381,684
  6. Step 6: Final answer
    x = 703,991.45

Related Problems

Find third proportional to 190,842 and 259,182.50
Half scale
Find third proportional to 763,368 and 1,036,730
Double scale
Find third proportional to 381,686 and 518,368
Similar ratio
Find third proportional to 572,526 and 777,547.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.36) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.