Home / 643,840.29-965,104.34-288,758.97

Finding the Fourth Proportional to 643,840.29, 965,104.34 and 288,758.97

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Solution

The fourth proportional to 643,840.29, 965,104.34 and 288,758.97 is: 432,844.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,840.29 : 965,104.34 = 288,758.97 : x
  2. Step 2: Convert to fraction form
    643,840.29/965,104.34 = 288,758.97/x
  3. Step 3: Cross multiply
    643,840.29x = 965,104.34 × 288,758.97
  4. Step 4: Simplify right side
    643,840.29x = 278,682,533,717.14
  5. Step 5: Solve for x
    x = 278,682,533,717.14/643,840.29
  6. Step 6: Final answer
    x = 432,844.20

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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.