Home / 1,290,448-1,780,734-717,466.96

Finding the Fourth Proportional to 1,290,448, 1,780,734 and 717,466.96

Calculator

Solution

The fourth proportional to 1,290,448, 1,780,734 and 717,466.96 is: 990,057.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,290,448 : 1,780,734 = 717,466.96 : x
  2. Step 2: Convert to fraction form
    1,290,448/1,780,734 = 717,466.96/x
  3. Step 3: Cross multiply
    1,290,448x = 1,780,734 × 717,466.96
  4. Step 4: Simplify right side
    1,290,448x = 1,277,617,809,548.64
  5. Step 5: Solve for x
    x = 1,277,617,809,548.64/1,290,448
  6. Step 6: Final answer
    x = 990,057.57

Related Problems

Find fourth proportional to 645,224, 890,367 and 358,733.48
Half scale
Find fourth proportional to 2,580,896, 3,561,468 and 1,434,933.92
Double scale
Find fourth proportional to 1,290,449, 1,780,735.38 and 717,467.96
Similar ratio
Find fourth proportional to 1,935,672, 2,671,101 and 1,076,200.44
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.