Home / 261,792-420,021

Finding the Third Proportional to 261,792 and 420,021

Calculator

Solution

The third proportional to 261,792 and 420,021 is: 673,884.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,792 : 420,021 = 420,021 : x
  2. Step 2: Convert to fraction form
    261,792/420,021 = 420,021/x
  3. Step 3: Cross multiply
    261,792x = 420,021 × 420,021
  4. Step 4: Simplify right side
    261,792x = 176,417,640,441
  5. Step 5: Solve for x
    x = 176,417,640,441/261,792
  6. Step 6: Final answer
    x = 673,884.77

Related Problems

Find third proportional to 130,896 and 210,010.50
Half scale
Find third proportional to 523,584 and 840,042
Double scale
Find third proportional to 261,794 and 420,024
Similar ratio
Find third proportional to 392,688 and 630,031.50
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.