Home / 276,072-427,488

Finding the Third Proportional to 276,072 and 427,488

Calculator

Solution

The third proportional to 276,072 and 427,488 is: 661,950.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,072 : 427,488 = 427,488 : x
  2. Step 2: Convert to fraction form
    276,072/427,488 = 427,488/x
  3. Step 3: Cross multiply
    276,072x = 427,488 × 427,488
  4. Step 4: Simplify right side
    276,072x = 182,745,990,144
  5. Step 5: Solve for x
    x = 182,745,990,144/276,072
  6. Step 6: Final answer
    x = 661,950.47

Related Problems

Find third proportional to 138,036 and 213,744
Half scale
Find third proportional to 552,144 and 854,976
Double scale
Find third proportional to 276,074 and 427,491
Similar ratio
Find third proportional to 414,108 and 641,232
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.