Home / 643,835.20-965,752.80-511,124.80

Finding the Fourth Proportional to 643,835.20, 965,752.80 and 511,124.80

Calculator

Solution

The fourth proportional to 643,835.20, 965,752.80 and 511,124.80 is: 766,687.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,835.20 : 965,752.80 = 511,124.80 : x
  2. Step 2: Convert to fraction form
    643,835.20/965,752.80 = 511,124.80/x
  3. Step 3: Cross multiply
    643,835.20x = 965,752.80 × 511,124.80
  4. Step 4: Simplify right side
    643,835.20x = 493,620,206,749.44
  5. Step 5: Solve for x
    x = 493,620,206,749.44/643,835.20
  6. Step 6: Final answer
    x = 766,687.20

Related Problems

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.