Home / 276,218-405,578

Finding the Third Proportional to 276,218 and 405,578

Calculator

Solution

The third proportional to 276,218 and 405,578 is: 595,520.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    276,218 : 405,578 = 405,578 : x
  2. Step 2: Convert to fraction form
    276,218/405,578 = 405,578/x
  3. Step 3: Cross multiply
    276,218x = 405,578 × 405,578
  4. Step 4: Simplify right side
    276,218x = 164,493,514,084
  5. Step 5: Solve for x
    x = 164,493,514,084/276,218
  6. Step 6: Final answer
    x = 595,520.62

Related Problems

Find third proportional to 138,109 and 202,789
Half scale
Find third proportional to 552,436 and 811,156
Double scale
Find third proportional to 276,220 and 405,581
Similar ratio
Find third proportional to 414,327 and 608,367
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.