Home / 509,388.07-702,909.77-279,942.83

Finding the Fourth Proportional to 509,388.07, 702,909.77 and 279,942.83

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Solution

The fourth proportional to 509,388.07, 702,909.77 and 279,942.83 is: 386,295.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,388.07 : 702,909.77 = 279,942.83 : x
  2. Step 2: Convert to fraction form
    509,388.07/702,909.77 = 279,942.83/x
  3. Step 3: Cross multiply
    509,388.07x = 702,909.77 × 279,942.83
  4. Step 4: Simplify right side
    509,388.07x = 196,774,554,285.98
  5. Step 5: Solve for x
    x = 196,774,554,285.98/509,388.07
  6. Step 6: Final answer
    x = 386,295.96

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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.