Home / 309,629.20-432,956-309,629.20

Finding the Fourth Proportional to 309,629.20, 432,956 and 309,629.20

Calculator

Solution

The fourth proportional to 309,629.20, 432,956 and 309,629.20 is: 432,956

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,629.20 : 432,956 = 309,629.20 : x
  2. Step 2: Convert to fraction form
    309,629.20/432,956 = 309,629.20/x
  3. Step 3: Cross multiply
    309,629.20x = 432,956 × 309,629.20
  4. Step 4: Simplify right side
    309,629.20x = 134,055,819,915.20
  5. Step 5: Solve for x
    x = 134,055,819,915.20/309,629.20
  6. Step 6: Final answer
    x = 432,956

Related Problems

Find fourth proportional to 154,814.60, 216,478 and 154,814.60
Half scale
Find fourth proportional to 619,258.40, 865,912 and 619,258.40
Double scale
Find fourth proportional to 309,630.20, 432,957.40 and 309,630.20
Similar ratio
Find fourth proportional to 464,443.80, 649,434 and 464,443.80
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.