Home / 643,076.10-964,367.01-305,856.90

Finding the Fourth Proportional to 643,076.10, 964,367.01 and 305,856.90

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Solution

The fourth proportional to 643,076.10, 964,367.01 and 305,856.90 is: 458,667.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,076.10 : 964,367.01 = 305,856.90 : x
  2. Step 2: Convert to fraction form
    643,076.10/964,367.01 = 305,856.90/x
  3. Step 3: Cross multiply
    643,076.10x = 964,367.01 × 305,856.90
  4. Step 4: Simplify right side
    643,076.10x = 294,958,304,140.87
  5. Step 5: Solve for x
    x = 294,958,304,140.87/643,076.10
  6. Step 6: Final answer
    x = 458,667.81

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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.