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Finding the Fourth Proportional to 509,179.37, 702,679.90 and 279,751.51

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Solution

The fourth proportional to 509,179.37, 702,679.90 and 279,751.51 is: 386,063.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,179.37 : 702,679.90 = 279,751.51 : x
  2. Step 2: Convert to fraction form
    509,179.37/702,679.90 = 279,751.51/x
  3. Step 3: Cross multiply
    509,179.37x = 702,679.90 × 279,751.51
  4. Step 4: Simplify right side
    509,179.37x = 196,575,763,071.65
  5. Step 5: Solve for x
    x = 196,575,763,071.65/509,179.37
  6. Step 6: Final answer
    x = 386,063.88

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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.