Home / 509,255.73-702,834.00-305,418.79

Finding the Fourth Proportional to 509,255.73, 702,834.00 and 305,418.79

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Solution

The fourth proportional to 509,255.73, 702,834.00 and 305,418.79 is: 421,514.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,255.73 : 702,834.00 = 305,418.79 : x
  2. Step 2: Convert to fraction form
    509,255.73/702,834.00 = 305,418.79/x
  3. Step 3: Cross multiply
    509,255.73x = 702,834.00 × 305,418.79
  4. Step 4: Simplify right side
    509,255.73x = 214,658,708,857.32
  5. Step 5: Solve for x
    x = 214,658,708,857.32/509,255.73
  6. Step 6: Final answer
    x = 421,514.57

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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.