Home / 858,255.46-1,286,485.81-289,440.05

Finding the Fourth Proportional to 858,255.46, 1,286,485.81 and 289,440.05

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Solution

The fourth proportional to 858,255.46, 1,286,485.81 and 289,440.05 is: 433,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,255.46 : 1,286,485.81 = 289,440.05 : x
  2. Step 2: Convert to fraction form
    858,255.46/1,286,485.81 = 289,440.05/x
  3. Step 3: Cross multiply
    858,255.46x = 1,286,485.81 × 289,440.05
  4. Step 4: Simplify right side
    858,255.46x = 372,360,510,014.66
  5. Step 5: Solve for x
    x = 372,360,510,014.66/858,255.46
  6. Step 6: Final answer
    x = 433,857.43

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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.