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Finding the Fourth Proportional to 521,292.80, 783,609.60 and 484,313.60

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Solution

The fourth proportional to 521,292.80, 783,609.60 and 484,313.60 is: 728,022.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,292.80 : 783,609.60 = 484,313.60 : x
  2. Step 2: Convert to fraction form
    521,292.80/783,609.60 = 484,313.60/x
  3. Step 3: Cross multiply
    521,292.80x = 783,609.60 × 484,313.60
  4. Step 4: Simplify right side
    521,292.80x = 379,512,786,370.56
  5. Step 5: Solve for x
    x = 379,512,786,370.56/521,292.80
  6. Step 6: Final answer
    x = 728,022.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.