Home / 326,090.60-489,135.90-287,599.40

Finding the Fourth Proportional to 326,090.60, 489,135.90 and 287,599.40

Calculator

Solution

The fourth proportional to 326,090.60, 489,135.90 and 287,599.40 is: 431,399.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,090.60 : 489,135.90 = 287,599.40 : x
  2. Step 2: Convert to fraction form
    326,090.60/489,135.90 = 287,599.40/x
  3. Step 3: Cross multiply
    326,090.60x = 489,135.90 × 287,599.40
  4. Step 4: Simplify right side
    326,090.60x = 140,675,191,358.46
  5. Step 5: Solve for x
    x = 140,675,191,358.46/326,090.60
  6. Step 6: Final answer
    x = 431,399.10

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.