Home / 643,082.64-964,376.72-305,863.44

Finding the Fourth Proportional to 643,082.64, 964,376.72 and 305,863.44

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Solution

The fourth proportional to 643,082.64, 964,376.72 and 305,863.44 is: 458,677.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,082.64 : 964,376.72 = 305,863.44 : x
  2. Step 2: Convert to fraction form
    643,082.64/964,376.72 = 305,863.44/x
  3. Step 3: Cross multiply
    643,082.64x = 964,376.72 × 305,863.44
  4. Step 4: Simplify right side
    643,082.64x = 294,967,581,035.12
  5. Step 5: Solve for x
    x = 294,967,581,035.12/643,082.64
  6. Step 6: Final answer
    x = 458,677.57

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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.