Home / 721,128.30-1,081,869.57-247,820.46

Finding the Fourth Proportional to 721,128.30, 1,081,869.57 and 247,820.46

Calculator

Solution

The fourth proportional to 721,128.30, 1,081,869.57 and 247,820.46 is: 371,791.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,128.30 : 1,081,869.57 = 247,820.46 : x
  2. Step 2: Convert to fraction form
    721,128.30/1,081,869.57 = 247,820.46/x
  3. Step 3: Cross multiply
    721,128.30x = 1,081,869.57 × 247,820.46
  4. Step 4: Simplify right side
    721,128.30x = 268,109,414,497.40
  5. Step 5: Solve for x
    x = 268,109,414,497.40/721,128.30
  6. Step 6: Final answer
    x = 371,791.56

Related Problems

Find fourth proportional to 360,564.15, 540,934.79 and 123,910.23
Half scale
Find fourth proportional to 1,442,256.60, 2,163,739.14 and 495,640.92
Double scale
Find fourth proportional to 721,129.30, 1,081,871.07 and 247,821.46
Similar ratio
Find fourth proportional to 1,081,692.45, 1,622,804.36 and 371,730.69
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.