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Finding the Fourth Proportional to 648,004.80, 971,661.60 and 273,604.80

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Solution

The fourth proportional to 648,004.80, 971,661.60 and 273,604.80 is: 410,261.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    648,004.80 : 971,661.60 = 273,604.80 : x
  2. Step 2: Convert to fraction form
    648,004.80/971,661.60 = 273,604.80/x
  3. Step 3: Cross multiply
    648,004.80x = 971,661.60 × 273,604.80
  4. Step 4: Simplify right side
    648,004.80x = 265,851,277,735.68
  5. Step 5: Solve for x
    x = 265,851,277,735.68/648,004.80
  6. Step 6: Final answer
    x = 410,261.28

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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.