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Finding the Fourth Proportional to 556,628.63, 768,147.80 and 301,979.75

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Solution

The fourth proportional to 556,628.63, 768,147.80 and 301,979.75 is: 416,732.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,628.63 : 768,147.80 = 301,979.75 : x
  2. Step 2: Convert to fraction form
    556,628.63/768,147.80 = 301,979.75/x
  3. Step 3: Cross multiply
    556,628.63x = 768,147.80 × 301,979.75
  4. Step 4: Simplify right side
    556,628.63x = 231,965,079,097.15
  5. Step 5: Solve for x
    x = 231,965,079,097.15/556,628.63
  6. Step 6: Final answer
    x = 416,732.21

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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.