Home / 780,745.76-1,077,372.58-431,871.42

Finding the Fourth Proportional to 780,745.76, 1,077,372.58 and 431,871.42

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Solution

The fourth proportional to 780,745.76, 1,077,372.58 and 431,871.42 is: 595,951.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,745.76 : 1,077,372.58 = 431,871.42 : x
  2. Step 2: Convert to fraction form
    780,745.76/1,077,372.58 = 431,871.42/x
  3. Step 3: Cross multiply
    780,745.76x = 1,077,372.58 × 431,871.42
  4. Step 4: Simplify right side
    780,745.76x = 465,286,425,993.66
  5. Step 5: Solve for x
    x = 465,286,425,993.66/780,745.76
  6. Step 6: Final answer
    x = 595,951.27

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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.