Home / 509,936.87-703,730.15-280,511.21

Finding the Fourth Proportional to 509,936.87, 703,730.15 and 280,511.21

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Solution

The fourth proportional to 509,936.87, 703,730.15 and 280,511.21 is: 387,114.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,936.87 : 703,730.15 = 280,511.21 : x
  2. Step 2: Convert to fraction form
    509,936.87/703,730.15 = 280,511.21/x
  3. Step 3: Cross multiply
    509,936.87x = 703,730.15 × 280,511.21
  4. Step 4: Simplify right side
    509,936.87x = 197,404,190,968.78
  5. Step 5: Solve for x
    x = 197,404,190,968.78/509,936.87
  6. Step 6: Final answer
    x = 387,114.96

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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.