Home / 390,941.61-539,221.24-358,780.11

Finding the Fourth Proportional to 390,941.61, 539,221.24 and 358,780.11

Calculator

Solution

The fourth proportional to 390,941.61, 539,221.24 and 358,780.11 is: 494,861.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,941.61 : 539,221.24 = 358,780.11 : x
  2. Step 2: Convert to fraction form
    390,941.61/539,221.24 = 358,780.11/x
  3. Step 3: Cross multiply
    390,941.61x = 539,221.24 × 358,780.11
  4. Step 4: Simplify right side
    390,941.61x = 193,461,855,801.54
  5. Step 5: Solve for x
    x = 193,461,855,801.54/390,941.61
  6. Step 6: Final answer
    x = 494,861.26

Related Problems

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.