Home / 419,037.92-628,204.80-339,956

Finding the Fourth Proportional to 419,037.92, 628,204.80 and 339,956

Calculator

Solution

The fourth proportional to 419,037.92, 628,204.80 and 339,956 is: 509,648.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,037.92 : 628,204.80 = 339,956 : x
  2. Step 2: Convert to fraction form
    419,037.92/628,204.80 = 339,956/x
  3. Step 3: Cross multiply
    419,037.92x = 628,204.80 × 339,956
  4. Step 4: Simplify right side
    419,037.92x = 213,561,990,988.80
  5. Step 5: Solve for x
    x = 213,561,990,988.80/419,037.92
  6. Step 6: Final answer
    x = 509,648.37

Related Problems

Find fourth proportional to 209,518.96, 314,102.40 and 169,978
Half scale
Find fourth proportional to 838,075.84, 1,256,409.60 and 679,912
Double scale
Find fourth proportional to 419,038.92, 628,206.30 and 339,957
Similar ratio
Find fourth proportional to 628,556.88, 942,307.20 and 509,934
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.