Home / 764,983.40-1,055,671.25-420,811.92

Finding the Fourth Proportional to 764,983.40, 1,055,671.25 and 420,811.92

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Solution

The fourth proportional to 764,983.40, 1,055,671.25 and 420,811.92 is: 580,717.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,983.40 : 1,055,671.25 = 420,811.92 : x
  2. Step 2: Convert to fraction form
    764,983.40/1,055,671.25 = 420,811.92/x
  3. Step 3: Cross multiply
    764,983.40x = 1,055,671.25 × 420,811.92
  4. Step 4: Simplify right side
    764,983.40x = 444,239,045,601.30
  5. Step 5: Solve for x
    x = 444,239,045,601.30/764,983.40
  6. Step 6: Final answer
    x = 580,717.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.