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Finding the Fourth Proportional to 643,942.63, 965,913 and 244,582.66

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Solution

The fourth proportional to 643,942.63, 965,913 and 244,582.66 is: 366,873.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,942.63 : 965,913 = 244,582.66 : x
  2. Step 2: Convert to fraction form
    643,942.63/965,913 = 244,582.66/x
  3. Step 3: Cross multiply
    643,942.63x = 965,913 × 244,582.66
  4. Step 4: Simplify right side
    643,942.63x = 236,245,570,868.58
  5. Step 5: Solve for x
    x = 236,245,570,868.58/643,942.63
  6. Step 6: Final answer
    x = 366,873.63

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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.