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Finding the Fourth Proportional to 556,579.50, 768,081.19 and 301,930.69

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Solution

The fourth proportional to 556,579.50, 768,081.19 and 301,930.69 is: 416,665.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,579.50 : 768,081.19 = 301,930.69 : x
  2. Step 2: Convert to fraction form
    556,579.50/768,081.19 = 301,930.69/x
  3. Step 3: Cross multiply
    556,579.50x = 768,081.19 × 301,930.69
  4. Step 4: Simplify right side
    556,579.50x = 231,907,283,853.14
  5. Step 5: Solve for x
    x = 231,907,283,853.14/556,579.50
  6. Step 6: Final answer
    x = 416,665.15

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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.