Home / 863,414.20-1,294,506.90-330,729.40

Finding the Fourth Proportional to 863,414.20, 1,294,506.90 and 330,729.40

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Solution

The fourth proportional to 863,414.20, 1,294,506.90 and 330,729.40 is: 495,858.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,414.20 : 1,294,506.90 = 330,729.40 : x
  2. Step 2: Convert to fraction form
    863,414.20/1,294,506.90 = 330,729.40/x
  3. Step 3: Cross multiply
    863,414.20x = 1,294,506.90 × 330,729.40
  4. Step 4: Simplify right side
    863,414.20x = 428,131,490,332.86
  5. Step 5: Solve for x
    x = 428,131,490,332.86/863,414.20
  6. Step 6: Final answer
    x = 495,858.76

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1.5x scale

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.