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Finding the Fourth Proportional to 662,917.05, 914,434.79 and 469,106.73

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Solution

The fourth proportional to 662,917.05, 914,434.79 and 469,106.73 is: 647,090.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,917.05 : 914,434.79 = 469,106.73 : x
  2. Step 2: Convert to fraction form
    662,917.05/914,434.79 = 469,106.73/x
  3. Step 3: Cross multiply
    662,917.05x = 914,434.79 × 469,106.73
  4. Step 4: Simplify right side
    662,917.05x = 428,967,511,789.60
  5. Step 5: Solve for x
    x = 428,967,511,789.60/662,917.05
  6. Step 6: Final answer
    x = 647,090.78

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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.