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Finding the Fourth Proportional to 478,630.45, 660,506.79 and 263,770.66

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Solution

The fourth proportional to 478,630.45, 660,506.79 and 263,770.66 is: 364,001.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,630.45 : 660,506.79 = 263,770.66 : x
  2. Step 2: Convert to fraction form
    478,630.45/660,506.79 = 263,770.66/x
  3. Step 3: Cross multiply
    478,630.45x = 660,506.79 × 263,770.66
  4. Step 4: Simplify right side
    478,630.45x = 174,222,311,932.78
  5. Step 5: Solve for x
    x = 174,222,311,932.78/478,630.45
  6. Step 6: Final answer
    x = 364,001.73

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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.