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Finding the Fourth Proportional to 663,183.36, 993,995.82 and 307,448.64

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Solution

The fourth proportional to 663,183.36, 993,995.82 and 307,448.64 is: 460,811.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,183.36 : 993,995.82 = 307,448.64 : x
  2. Step 2: Convert to fraction form
    663,183.36/993,995.82 = 307,448.64/x
  3. Step 3: Cross multiply
    663,183.36x = 993,995.82 × 307,448.64
  4. Step 4: Simplify right side
    663,183.36x = 305,602,663,024.69
  5. Step 5: Solve for x
    x = 305,602,663,024.69/663,183.36
  6. Step 6: Final answer
    x = 460,811.72

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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.