Home / 856,455.40-1,284,380.70-295,359.40

Finding the Fourth Proportional to 856,455.40, 1,284,380.70 and 295,359.40

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Solution

The fourth proportional to 856,455.40, 1,284,380.70 and 295,359.40 is: 442,934.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,455.40 : 1,284,380.70 = 295,359.40 : x
  2. Step 2: Convert to fraction form
    856,455.40/1,284,380.70 = 295,359.40/x
  3. Step 3: Cross multiply
    856,455.40x = 1,284,380.70 × 295,359.40
  4. Step 4: Simplify right side
    856,455.40x = 379,353,912,923.58
  5. Step 5: Solve for x
    x = 379,353,912,923.58/856,455.40
  6. Step 6: Final answer
    x = 442,934.81

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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.