Home / 643,862.52-965,939.58-344,185.20

Finding the Fourth Proportional to 643,862.52, 965,939.58 and 344,185.20

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Solution

The fourth proportional to 643,862.52, 965,939.58 and 344,185.20 is: 516,355.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,862.52 : 965,939.58 = 344,185.20 : x
  2. Step 2: Convert to fraction form
    643,862.52/965,939.58 = 344,185.20/x
  3. Step 3: Cross multiply
    643,862.52x = 965,939.58 × 344,185.20
  4. Step 4: Simplify right side
    643,862.52x = 332,462,107,530.22
  5. Step 5: Solve for x
    x = 332,462,107,530.22/643,862.52
  6. Step 6: Final answer
    x = 516,355.74

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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.