Home / 1,223.56-1,835.28-454

Finding the Fourth Proportional to 1,223.56, 1,835.28 and 454

Calculator

Solution

The fourth proportional to 1,223.56, 1,835.28 and 454 is: 680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,223.56 : 1,835.28 = 454 : x
  2. Step 2: Convert to fraction form
    1,223.56/1,835.28 = 454/x
  3. Step 3: Cross multiply
    1,223.56x = 1,835.28 × 454
  4. Step 4: Simplify right side
    1,223.56x = 833,217.12
  5. Step 5: Solve for x
    x = 833,217.12/1,223.56
  6. Step 6: Final answer
    x = 680.98

Related Problems

Find fourth proportional to 611.78, 917.64 and 227
Half scale
Find fourth proportional to 2,447.12, 3,670.56 and 908
Double scale
Find fourth proportional to 1,224.56, 1,836.78 and 455
Similar ratio
Find fourth proportional to 1,835.34, 2,752.92 and 681
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.