Home / 310,905-475,380

Finding the Third Proportional to 310,905 and 475,380

Calculator

Solution

The third proportional to 310,905 and 475,380 is: 726,865.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,905 : 475,380 = 475,380 : x
  2. Step 2: Convert to fraction form
    310,905/475,380 = 475,380/x
  3. Step 3: Cross multiply
    310,905x = 475,380 × 475,380
  4. Step 4: Simplify right side
    310,905x = 225,986,144,400
  5. Step 5: Solve for x
    x = 225,986,144,400/310,905
  6. Step 6: Final answer
    x = 726,865.58

Related Problems

Find third proportional to 155,452.50 and 237,690
Half scale
Find third proportional to 621,810 and 950,760
Double scale
Find third proportional to 310,907 and 475,383
Similar ratio
Find third proportional to 466,357.50 and 713,070
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.