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Finding the Fourth Proportional to 643,801.60, 965,529.60 and 269,747.20

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Solution

The fourth proportional to 643,801.60, 965,529.60 and 269,747.20 is: 404,548.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,801.60 : 965,529.60 = 269,747.20 : x
  2. Step 2: Convert to fraction form
    643,801.60/965,529.60 = 269,747.20/x
  3. Step 3: Cross multiply
    643,801.60x = 965,529.60 × 269,747.20
  4. Step 4: Simplify right side
    643,801.60x = 260,448,906,117.12
  5. Step 5: Solve for x
    x = 260,448,906,117.12/643,801.60
  6. Step 6: Final answer
    x = 404,548.40

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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.