Home / 1,115,235.40-1,672,853.10-405,286.60

Finding the Fourth Proportional to 1,115,235.40, 1,672,853.10 and 405,286.60

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Solution

The fourth proportional to 1,115,235.40, 1,672,853.10 and 405,286.60 is: 607,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,115,235.40 : 1,672,853.10 = 405,286.60 : x
  2. Step 2: Convert to fraction form
    1,115,235.40/1,672,853.10 = 405,286.60/x
  3. Step 3: Cross multiply
    1,115,235.40x = 1,672,853.10 × 405,286.60
  4. Step 4: Simplify right side
    1,115,235.40x = 677,984,945,198.46
  5. Step 5: Solve for x
    x = 677,984,945,198.46/1,115,235.40
  6. Step 6: Final answer
    x = 607,929.90

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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.