Home / 856,605.88-1,284,911.71-216,909.31

Finding the Fourth Proportional to 856,605.88, 1,284,911.71 and 216,909.31

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Solution

The fourth proportional to 856,605.88, 1,284,911.71 and 216,909.31 is: 325,364.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    856,605.88 : 1,284,911.71 = 216,909.31 : x
  2. Step 2: Convert to fraction form
    856,605.88/1,284,911.71 = 216,909.31/x
  3. Step 3: Cross multiply
    856,605.88x = 1,284,911.71 × 216,909.31
  4. Step 4: Simplify right side
    856,605.88x = 278,709,311,081.68
  5. Step 5: Solve for x
    x = 278,709,311,081.68/856,605.88
  6. Step 6: Final answer
    x = 325,364.69

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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.