Home / 490,387.07-677,036.07-388,822.79

Finding the Fourth Proportional to 490,387.07, 677,036.07 and 388,822.79

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Solution

The fourth proportional to 490,387.07, 677,036.07 and 388,822.79 is: 536,814.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,387.07 : 677,036.07 = 388,822.79 : x
  2. Step 2: Convert to fraction form
    490,387.07/677,036.07 = 388,822.79/x
  3. Step 3: Cross multiply
    490,387.07x = 677,036.07 × 388,822.79
  4. Step 4: Simplify right side
    490,387.07x = 263,247,053,668.04
  5. Step 5: Solve for x
    x = 263,247,053,668.04/490,387.07
  6. Step 6: Final answer
    x = 536,814.83

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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.