Home / 420,600-912,188

Finding the Third Proportional to 420,600 and 912,188

Calculator

Solution

The third proportional to 420,600 and 912,188 is: 1,978,333.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    420,600 : 912,188 = 912,188 : x
  2. Step 2: Convert to fraction form
    420,600/912,188 = 912,188/x
  3. Step 3: Cross multiply
    420,600x = 912,188 × 912,188
  4. Step 4: Simplify right side
    420,600x = 832,086,947,344
  5. Step 5: Solve for x
    x = 832,086,947,344/420,600
  6. Step 6: Final answer
    x = 1,978,333.21

Related Problems

Find third proportional to 210,300 and 456,094
Half scale
Find third proportional to 841,200 and 1,824,376
Double scale
Find third proportional to 420,602 and 912,192
Similar ratio
Find third proportional to 630,900 and 1,368,282
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.