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Finding the Fourth Proportional to 484,696.12, 668,865.46 and 280,751.03

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Solution

The fourth proportional to 484,696.12, 668,865.46 and 280,751.03 is: 387,427.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,696.12 : 668,865.46 = 280,751.03 : x
  2. Step 2: Convert to fraction form
    484,696.12/668,865.46 = 280,751.03/x
  3. Step 3: Cross multiply
    484,696.12x = 668,865.46 × 280,751.03
  4. Step 4: Simplify right side
    484,696.12x = 187,784,665,060.09
  5. Step 5: Solve for x
    x = 187,784,665,060.09/484,696.12
  6. Step 6: Final answer
    x = 387,427.62

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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.