Home / 290,868.50-628,431.50

Finding the Third Proportional to 290,868.50 and 628,431.50

Calculator

Solution

The third proportional to 290,868.50 and 628,431.50 is: 1,357,748.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,868.50 : 628,431.50 = 628,431.50 : x
  2. Step 2: Convert to fraction form
    290,868.50/628,431.50 = 628,431.50/x
  3. Step 3: Cross multiply
    290,868.50x = 628,431.50 × 628,431.50
  4. Step 4: Simplify right side
    290,868.50x = 394,926,150,192.25
  5. Step 5: Solve for x
    x = 394,926,150,192.25/290,868.50
  6. Step 6: Final answer
    x = 1,357,748.09

Related Problems

Find third proportional to 145,434.25 and 314,215.75
Half scale
Find third proportional to 581,737 and 1,256,863
Double scale
Find third proportional to 290,871 and 628,436
Similar ratio
Find third proportional to 436,302.75 and 942,647.25
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.