Home / 761,121.82-1,141,789.35-311,906.55

Finding the Fourth Proportional to 761,121.82, 1,141,789.35 and 311,906.55

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Solution

The fourth proportional to 761,121.82, 1,141,789.35 and 311,906.55 is: 467,903.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    761,121.82 : 1,141,789.35 = 311,906.55 : x
  2. Step 2: Convert to fraction form
    761,121.82/1,141,789.35 = 311,906.55/x
  3. Step 3: Cross multiply
    761,121.82x = 1,141,789.35 × 311,906.55
  4. Step 4: Simplify right side
    761,121.82x = 356,131,576,985.24
  5. Step 5: Solve for x
    x = 356,131,576,985.24/761,121.82
  6. Step 6: Final answer
    x = 467,903.52

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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.