Home / 438,415-657,622

Finding the Third Proportional to 438,415 and 657,622

Calculator

Solution

The third proportional to 438,415 and 657,622 is: 986,432.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,415 : 657,622 = 657,622 : x
  2. Step 2: Convert to fraction form
    438,415/657,622 = 657,622/x
  3. Step 3: Cross multiply
    438,415x = 657,622 × 657,622
  4. Step 4: Simplify right side
    438,415x = 432,466,694,884
  5. Step 5: Solve for x
    x = 432,466,694,884/438,415
  6. Step 6: Final answer
    x = 986,432.25

Related Problems

Find third proportional to 219,207.50 and 328,811
Half scale
Find third proportional to 876,830 and 1,315,244
Double scale
Find third proportional to 438,417 and 657,625
Similar ratio
Find third proportional to 657,622.50 and 986,433
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.