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Finding the Fourth Proportional to 452,388.36, 678,605.89 and 115,431.96

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Solution

The fourth proportional to 452,388.36, 678,605.89 and 115,431.96 is: 173,153.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    452,388.36 : 678,605.89 = 115,431.96 : x
  2. Step 2: Convert to fraction form
    452,388.36/678,605.89 = 115,431.96/x
  3. Step 3: Cross multiply
    452,388.36x = 678,605.89 × 115,431.96
  4. Step 4: Simplify right side
    452,388.36x = 78,332,807,950.24
  5. Step 5: Solve for x
    x = 78,332,807,950.24/452,388.36
  6. Step 6: Final answer
    x = 173,153.90

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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.