Home / 643,396.64-964,467.26-306,346.73

Finding the Fourth Proportional to 643,396.64, 964,467.26 and 306,346.73

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Solution

The fourth proportional to 643,396.64, 964,467.26 and 306,346.73 is: 459,221.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,396.64 : 964,467.26 = 306,346.73 : x
  2. Step 2: Convert to fraction form
    643,396.64/964,467.26 = 306,346.73/x
  3. Step 3: Cross multiply
    643,396.64x = 964,467.26 × 306,346.73
  4. Step 4: Simplify right side
    643,396.64x = 295,461,384,938.99
  5. Step 5: Solve for x
    x = 295,461,384,938.99/643,396.64
  6. Step 6: Final answer
    x = 459,221.22

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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.