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Finding the Fourth Proportional to 485,122.32, 664,620.64 and 466,940.96

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Solution

The fourth proportional to 485,122.32, 664,620.64 and 466,940.96 is: 639,712.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,122.32 : 664,620.64 = 466,940.96 : x
  2. Step 2: Convert to fraction form
    485,122.32/664,620.64 = 466,940.96/x
  3. Step 3: Cross multiply
    485,122.32x = 664,620.64 × 466,940.96
  4. Step 4: Simplify right side
    485,122.32x = 310,338,599,677.41
  5. Step 5: Solve for x
    x = 310,338,599,677.41/485,122.32
  6. Step 6: Final answer
    x = 639,712.06

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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.