Home / 643,540.92-965,437.20-194,298.36

Finding the Fourth Proportional to 643,540.92, 965,437.20 and 194,298.36

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Solution

The fourth proportional to 643,540.92, 965,437.20 and 194,298.36 is: 291,485.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,540.92 : 965,437.20 = 194,298.36 : x
  2. Step 2: Convert to fraction form
    643,540.92/965,437.20 = 194,298.36/x
  3. Step 3: Cross multiply
    643,540.92x = 965,437.20 × 194,298.36
  4. Step 4: Simplify right side
    643,540.92x = 187,582,864,642.99
  5. Step 5: Solve for x
    x = 187,582,864,642.99/643,540.92
  6. Step 6: Final answer
    x = 291,485.53

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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.