Home / 827,314.27-1,240,392.49-422,631.79

Finding the Fourth Proportional to 827,314.27, 1,240,392.49 and 422,631.79

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Solution

The fourth proportional to 827,314.27, 1,240,392.49 and 422,631.79 is: 633,651.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    827,314.27 : 1,240,392.49 = 422,631.79 : x
  2. Step 2: Convert to fraction form
    827,314.27/1,240,392.49 = 422,631.79/x
  3. Step 3: Cross multiply
    827,314.27x = 1,240,392.49 × 422,631.79
  4. Step 4: Simplify right side
    827,314.27x = 524,229,298,351.26
  5. Step 5: Solve for x
    x = 524,229,298,351.26/827,314.27
  6. Step 6: Final answer
    x = 633,651.95

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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.