Home / 553,678-878,448

Finding the Third Proportional to 553,678 and 878,448

Calculator

Solution

The third proportional to 553,678 and 878,448 is: 1,393,717.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,678 : 878,448 = 878,448 : x
  2. Step 2: Convert to fraction form
    553,678/878,448 = 878,448/x
  3. Step 3: Cross multiply
    553,678x = 878,448 × 878,448
  4. Step 4: Simplify right side
    553,678x = 771,670,888,704
  5. Step 5: Solve for x
    x = 771,670,888,704/553,678
  6. Step 6: Final answer
    x = 1,393,717.81

Related Problems

Find third proportional to 276,839 and 439,224
Half scale
Find third proportional to 1,107,356 and 1,756,896
Double scale
Find third proportional to 553,680 and 878,451
Similar ratio
Find third proportional to 830,517 and 1,317,672
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.