Home / 780,087.36-1,169,899.20-330,801.60

Finding the Fourth Proportional to 780,087.36, 1,169,899.20 and 330,801.60

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Solution

The fourth proportional to 780,087.36, 1,169,899.20 and 330,801.60 is: 496,104.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,087.36 : 1,169,899.20 = 330,801.60 : x
  2. Step 2: Convert to fraction form
    780,087.36/1,169,899.20 = 330,801.60/x
  3. Step 3: Cross multiply
    780,087.36x = 1,169,899.20 × 330,801.60
  4. Step 4: Simplify right side
    780,087.36x = 387,004,527,198.72
  5. Step 5: Solve for x
    x = 387,004,527,198.72/780,087.36
  6. Step 6: Final answer
    x = 496,104.09

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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.