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Finding the Fourth Proportional to 485,086.54, 664,571.79 and 466,905.16

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Solution

The fourth proportional to 485,086.54, 664,571.79 and 466,905.16 is: 639,663.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,086.54 : 664,571.79 = 466,905.16 : x
  2. Step 2: Convert to fraction form
    485,086.54/664,571.79 = 466,905.16/x
  3. Step 3: Cross multiply
    485,086.54x = 664,571.79 × 466,905.16
  4. Step 4: Simplify right side
    485,086.54x = 310,291,997,941.44
  5. Step 5: Solve for x
    x = 310,291,997,941.44/485,086.54
  6. Step 6: Final answer
    x = 639,663.18

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.