Home / 858,255.08-1,286,485.25-289,439.67

Finding the Fourth Proportional to 858,255.08, 1,286,485.25 and 289,439.67

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Solution

The fourth proportional to 858,255.08, 1,286,485.25 and 289,439.67 is: 433,856.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,255.08 : 1,286,485.25 = 289,439.67 : x
  2. Step 2: Convert to fraction form
    858,255.08/1,286,485.25 = 289,439.67/x
  3. Step 3: Cross multiply
    858,255.08x = 1,286,485.25 × 289,439.67
  4. Step 4: Simplify right side
    858,255.08x = 372,359,864,772.67
  5. Step 5: Solve for x
    x = 372,359,864,772.67/858,255.08
  6. Step 6: Final answer
    x = 433,856.87

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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.