Home / 257,760-559,800

Finding the Third Proportional to 257,760 and 559,800

Calculator

Solution

The third proportional to 257,760 and 559,800 is: 1,215,766.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,760 : 559,800 = 559,800 : x
  2. Step 2: Convert to fraction form
    257,760/559,800 = 559,800/x
  3. Step 3: Cross multiply
    257,760x = 559,800 × 559,800
  4. Step 4: Simplify right side
    257,760x = 313,376,040,000
  5. Step 5: Solve for x
    x = 313,376,040,000/257,760
  6. Step 6: Final answer
    x = 1,215,766.76

Related Problems

Find third proportional to 128,880 and 279,900
Half scale
Find third proportional to 515,520 and 1,119,600
Double scale
Find third proportional to 257,762 and 559,804
Similar ratio
Find third proportional to 386,640 and 839,700
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.