Home / 420,600-900,240

Finding the Third Proportional to 420,600 and 900,240

Calculator

Solution

The third proportional to 420,600 and 900,240 is: 1,926,847.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,600 : 900,240 = 900,240 : x
  2. Step 2: Convert to fraction form
    420,600/900,240 = 900,240/x
  3. Step 3: Cross multiply
    420,600x = 900,240 × 900,240
  4. Step 4: Simplify right side
    420,600x = 810,432,057,600
  5. Step 5: Solve for x
    x = 810,432,057,600/420,600
  6. Step 6: Final answer
    x = 1,926,847.50

Related Problems

Find third proportional to 210,300 and 450,120
Half scale
Find third proportional to 841,200 and 1,800,480
Double scale
Find third proportional to 420,602 and 900,244
Similar ratio
Find third proportional to 630,900 and 1,350,360
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.