Home / 300,056-640,288

Finding the Third Proportional to 300,056 and 640,288

Calculator

Solution

The third proportional to 300,056 and 640,288 is: 1,366,307.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    300,056 : 640,288 = 640,288 : x
  2. Step 2: Convert to fraction form
    300,056/640,288 = 640,288/x
  3. Step 3: Cross multiply
    300,056x = 640,288 × 640,288
  4. Step 4: Simplify right side
    300,056x = 409,968,722,944
  5. Step 5: Solve for x
    x = 409,968,722,944/300,056
  6. Step 6: Final answer
    x = 1,366,307.37

Related Problems

Find third proportional to 150,028 and 320,144
Half scale
Find third proportional to 600,112 and 1,280,576
Double scale
Find third proportional to 300,058 and 640,292
Similar ratio
Find third proportional to 450,084 and 960,432
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.13) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.