Home / 423,403-635,104.50-127,915

Finding the Fourth Proportional to 423,403, 635,104.50 and 127,915

Calculator

Solution

The fourth proportional to 423,403, 635,104.50 and 127,915 is: 191,872.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,403 : 635,104.50 = 127,915 : x
  2. Step 2: Convert to fraction form
    423,403/635,104.50 = 127,915/x
  3. Step 3: Cross multiply
    423,403x = 635,104.50 × 127,915
  4. Step 4: Simplify right side
    423,403x = 81,239,392,117.50
  5. Step 5: Solve for x
    x = 81,239,392,117.50/423,403
  6. Step 6: Final answer
    x = 191,872.50

Related Problems

Find fourth proportional to 211,701.50, 317,552.25 and 63,957.50
Half scale
Find fourth proportional to 846,806, 1,270,209 and 255,830
Double scale
Find fourth proportional to 423,404, 635,106 and 127,916
Similar ratio
Find fourth proportional to 635,104.50, 952,656.75 and 191,872.50
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.