Home / 421,610-616,640

Finding the Third Proportional to 421,610 and 616,640

Calculator

Solution

The third proportional to 421,610 and 616,640 is: 901,887.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,610 : 616,640 = 616,640 : x
  2. Step 2: Convert to fraction form
    421,610/616,640 = 616,640/x
  3. Step 3: Cross multiply
    421,610x = 616,640 × 616,640
  4. Step 4: Simplify right side
    421,610x = 380,244,889,600
  5. Step 5: Solve for x
    x = 380,244,889,600/421,610
  6. Step 6: Final answer
    x = 901,887.74

Related Problems

Find third proportional to 210,805 and 308,320
Half scale
Find third proportional to 843,220 and 1,233,280
Double scale
Find third proportional to 421,612 and 616,643
Similar ratio
Find third proportional to 632,415 and 924,960
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.