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Finding the Fourth Proportional to 479,463.54, 718,405.01 and 430,022.31

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Solution

The fourth proportional to 479,463.54, 718,405.01 and 430,022.31 is: 644,324.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,463.54 : 718,405.01 = 430,022.31 : x
  2. Step 2: Convert to fraction form
    479,463.54/718,405.01 = 430,022.31/x
  3. Step 3: Cross multiply
    479,463.54x = 718,405.01 × 430,022.31
  4. Step 4: Simplify right side
    479,463.54x = 308,930,179,765.66
  5. Step 5: Solve for x
    x = 308,930,179,765.66/479,463.54
  6. Step 6: Final answer
    x = 644,324.65

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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.