Home / 548,629.76-757,538.56-421,103.36

Finding the Fourth Proportional to 548,629.76, 757,538.56 and 421,103.36

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Solution

The fourth proportional to 548,629.76, 757,538.56 and 421,103.36 is: 581,452.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,629.76 : 757,538.56 = 421,103.36 : x
  2. Step 2: Convert to fraction form
    548,629.76/757,538.56 = 421,103.36/x
  3. Step 3: Cross multiply
    548,629.76x = 757,538.56 × 421,103.36
  4. Step 4: Simplify right side
    548,629.76x = 319,002,032,945.56
  5. Step 5: Solve for x
    x = 319,002,032,945.56/548,629.76
  6. Step 6: Final answer
    x = 581,452.29

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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.