Home / 500,040-690,055.20-273,685.50

Finding the Fourth Proportional to 500,040, 690,055.20 and 273,685.50

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Solution

The fourth proportional to 500,040, 690,055.20 and 273,685.50 is: 377,685.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,040 : 690,055.20 = 273,685.50 : x
  2. Step 2: Convert to fraction form
    500,040/690,055.20 = 273,685.50/x
  3. Step 3: Cross multiply
    500,040x = 690,055.20 × 273,685.50
  4. Step 4: Simplify right side
    500,040x = 188,858,102,439.60
  5. Step 5: Solve for x
    x = 188,858,102,439.60/500,040
  6. Step 6: Final answer
    x = 377,685.99

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1.5x scale

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.