Home / 1,404.48-2,106-479.64

Finding the Fourth Proportional to 1,404.48, 2,106 and 479.64

Calculator

Solution

The fourth proportional to 1,404.48, 2,106 and 479.64 is: 719.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,404.48 : 2,106 = 479.64 : x
  2. Step 2: Convert to fraction form
    1,404.48/2,106 = 479.64/x
  3. Step 3: Cross multiply
    1,404.48x = 2,106 × 479.64
  4. Step 4: Simplify right side
    1,404.48x = 1,010,121.84
  5. Step 5: Solve for x
    x = 1,010,121.84/1,404.48
  6. Step 6: Final answer
    x = 719.21

Related Problems

Find fourth proportional to 702.24, 1,053 and 239.82
Half scale
Find fourth proportional to 2,808.96, 4,212 and 959.28
Double scale
Find fourth proportional to 1,405.48, 2,107.50 and 480.64
Similar ratio
Find fourth proportional to 2,106.72, 3,159 and 719.46
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.