Home / 685,585.26-1,028,588.49-306,825.21

Finding the Fourth Proportional to 685,585.26, 1,028,588.49 and 306,825.21

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Solution

The fourth proportional to 685,585.26, 1,028,588.49 and 306,825.21 is: 460,332.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,585.26 : 1,028,588.49 = 306,825.21 : x
  2. Step 2: Convert to fraction form
    685,585.26/1,028,588.49 = 306,825.21/x
  3. Step 3: Cross multiply
    685,585.26x = 1,028,588.49 × 306,825.21
  4. Step 4: Simplify right side
    685,585.26x = 315,596,879,447.83
  5. Step 5: Solve for x
    x = 315,596,879,447.83/685,585.26
  6. Step 6: Final answer
    x = 460,332.07

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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.