Home / 509,653.20-703,260.36-280,172.64

Finding the Fourth Proportional to 509,653.20, 703,260.36 and 280,172.64

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Solution

The fourth proportional to 509,653.20, 703,260.36 and 280,172.64 is: 386,604.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,653.20 : 703,260.36 = 280,172.64 : x
  2. Step 2: Convert to fraction form
    509,653.20/703,260.36 = 280,172.64/x
  3. Step 3: Cross multiply
    509,653.20x = 703,260.36 × 280,172.64
  4. Step 4: Simplify right side
    509,653.20x = 197,034,311,668.55
  5. Step 5: Solve for x
    x = 197,034,311,668.55/509,653.20
  6. Step 6: Final answer
    x = 386,604.68

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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.