Home / 764,951.08-1,055,658.50-420,801.64

Finding the Fourth Proportional to 764,951.08, 1,055,658.50 and 420,801.64

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Solution

The fourth proportional to 764,951.08, 1,055,658.50 and 420,801.64 is: 580,720.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    764,951.08 : 1,055,658.50 = 420,801.64 : x
  2. Step 2: Convert to fraction form
    764,951.08/1,055,658.50 = 420,801.64/x
  3. Step 3: Cross multiply
    764,951.08x = 1,055,658.50 × 420,801.64
  4. Step 4: Simplify right side
    764,951.08x = 444,222,828,079.94
  5. Step 5: Solve for x
    x = 444,222,828,079.94/764,951.08
  6. Step 6: Final answer
    x = 580,720.57

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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.