Home / 1,021.63-1,409.86-602

Finding the Fourth Proportional to 1,021.63, 1,409.86 and 602

Calculator

Solution

The fourth proportional to 1,021.63, 1,409.86 and 602 is: 830.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,021.63 : 1,409.86 = 602 : x
  2. Step 2: Convert to fraction form
    1,021.63/1,409.86 = 602/x
  3. Step 3: Cross multiply
    1,021.63x = 1,409.86 × 602
  4. Step 4: Simplify right side
    1,021.63x = 848,732.71
  5. Step 5: Solve for x
    x = 848,732.71/1,021.63
  6. Step 6: Final answer
    x = 830.76

Related Problems

Find fourth proportional to 510.82, 704.93 and 301
Half scale
Find fourth proportional to 2,043.26, 2,819.71 and 1,204
Double scale
Find fourth proportional to 1,022.63, 1,411.24 and 603
Similar ratio
Find fourth proportional to 1,532.45, 2,114.78 and 903
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.