Home / 393,128.75-589,693.13-112,646

Finding the Fourth Proportional to 393,128.75, 589,693.13 and 112,646

Calculator

Solution

The fourth proportional to 393,128.75, 589,693.13 and 112,646 is: 168,969

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,128.75 : 589,693.13 = 112,646 : x
  2. Step 2: Convert to fraction form
    393,128.75/589,693.13 = 112,646/x
  3. Step 3: Cross multiply
    393,128.75x = 589,693.13 × 112,646
  4. Step 4: Simplify right side
    393,128.75x = 66,426,571,758.75
  5. Step 5: Solve for x
    x = 66,426,571,758.75/393,128.75
  6. Step 6: Final answer
    x = 168,969

Related Problems

Find fourth proportional to 196,564.38, 294,846.56 and 56,323
Half scale
Find fourth proportional to 786,257.50, 1,179,386.25 and 225,292
Double scale
Find fourth proportional to 393,129.75, 589,694.63 and 112,647
Similar ratio
Find fourth proportional to 589,693.13, 884,539.69 and 168,969
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.