Home / 720,979.71-1,082,119.58-384,300.78

Finding the Fourth Proportional to 720,979.71, 1,082,119.58 and 384,300.78

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Solution

The fourth proportional to 720,979.71, 1,082,119.58 and 384,300.78 is: 576,797.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,979.71 : 1,082,119.58 = 384,300.78 : x
  2. Step 2: Convert to fraction form
    720,979.71/1,082,119.58 = 384,300.78/x
  3. Step 3: Cross multiply
    720,979.71x = 1,082,119.58 × 384,300.78
  4. Step 4: Simplify right side
    720,979.71x = 415,859,395,550.08
  5. Step 5: Solve for x
    x = 415,859,395,550.08/720,979.71
  6. Step 6: Final answer
    x = 576,797.64

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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.