Home / 423,516-635,274-128,028

Finding the Fourth Proportional to 423,516, 635,274 and 128,028

Calculator

Solution

The fourth proportional to 423,516, 635,274 and 128,028 is: 192,042

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,516 : 635,274 = 128,028 : x
  2. Step 2: Convert to fraction form
    423,516/635,274 = 128,028/x
  3. Step 3: Cross multiply
    423,516x = 635,274 × 128,028
  4. Step 4: Simplify right side
    423,516x = 81,332,859,672
  5. Step 5: Solve for x
    x = 81,332,859,672/423,516
  6. Step 6: Final answer
    x = 192,042

Related Problems

Find fourth proportional to 211,758, 317,637 and 64,014
Half scale
Find fourth proportional to 847,032, 1,270,548 and 256,056
Double scale
Find fourth proportional to 423,517, 635,275.50 and 128,029
Similar ratio
Find fourth proportional to 635,274, 952,911 and 192,042
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.