Home / 643,380.60-964,898.10-269,326.20

Finding the Fourth Proportional to 643,380.60, 964,898.10 and 269,326.20

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Solution

The fourth proportional to 643,380.60, 964,898.10 and 269,326.20 is: 403,916.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,380.60 : 964,898.10 = 269,326.20 : x
  2. Step 2: Convert to fraction form
    643,380.60/964,898.10 = 269,326.20/x
  3. Step 3: Cross multiply
    643,380.60x = 964,898.10 × 269,326.20
  4. Step 4: Simplify right side
    643,380.60x = 259,872,338,660.22
  5. Step 5: Solve for x
    x = 259,872,338,660.22/643,380.60
  6. Step 6: Final answer
    x = 403,916.96

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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.