Home / 389,013.60-579,429.24-370,812

Finding the Fourth Proportional to 389,013.60, 579,429.24 and 370,812

Calculator

Solution

The fourth proportional to 389,013.60, 579,429.24 and 370,812 is: 552,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,013.60 : 579,429.24 = 370,812 : x
  2. Step 2: Convert to fraction form
    389,013.60/579,429.24 = 370,812/x
  3. Step 3: Cross multiply
    389,013.60x = 579,429.24 × 370,812
  4. Step 4: Simplify right side
    389,013.60x = 214,859,315,342.88
  5. Step 5: Solve for x
    x = 214,859,315,342.88/389,013.60
  6. Step 6: Final answer
    x = 552,318.26

Related Problems

Find fourth proportional to 194,506.80, 289,714.62 and 185,406
Half scale
Find fourth proportional to 778,027.20, 1,158,858.48 and 741,624
Double scale
Find fourth proportional to 389,014.60, 579,430.73 and 370,813
Similar ratio
Find fourth proportional to 583,520.40, 869,143.86 and 556,218
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.