Home / 477,220-645,798

Finding the Third Proportional to 477,220 and 645,798

Calculator

Solution

The third proportional to 477,220 and 645,798 is: 873,926.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,220 : 645,798 = 645,798 : x
  2. Step 2: Convert to fraction form
    477,220/645,798 = 645,798/x
  3. Step 3: Cross multiply
    477,220x = 645,798 × 645,798
  4. Step 4: Simplify right side
    477,220x = 417,055,056,804
  5. Step 5: Solve for x
    x = 417,055,056,804/477,220
  6. Step 6: Final answer
    x = 873,926.19

Related Problems

Find third proportional to 238,610 and 322,899
Half scale
Find third proportional to 954,440 and 1,291,596
Double scale
Find third proportional to 477,222 and 645,801
Similar ratio
Find third proportional to 715,830 and 968,697
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.