Home / 643,867.52-965,947.08-344,190.20

Finding the Fourth Proportional to 643,867.52, 965,947.08 and 344,190.20

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Solution

The fourth proportional to 643,867.52, 965,947.08 and 344,190.20 is: 516,363.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,867.52 : 965,947.08 = 344,190.20 : x
  2. Step 2: Convert to fraction form
    643,867.52/965,947.08 = 344,190.20/x
  3. Step 3: Cross multiply
    643,867.52x = 965,947.08 × 344,190.20
  4. Step 4: Simplify right side
    643,867.52x = 332,469,518,654.62
  5. Step 5: Solve for x
    x = 332,469,518,654.62/643,867.52
  6. Step 6: Final answer
    x = 516,363.24

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Double scale
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1.5x scale

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.