Home / 411,429.20-618,180.60-261,741.20

Finding the Fourth Proportional to 411,429.20, 618,180.60 and 261,741.20

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Solution

The fourth proportional to 411,429.20, 618,180.60 and 261,741.20 is: 393,271.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,429.20 : 618,180.60 = 261,741.20 : x
  2. Step 2: Convert to fraction form
    411,429.20/618,180.60 = 261,741.20/x
  3. Step 3: Cross multiply
    411,429.20x = 618,180.60 × 261,741.20
  4. Step 4: Simplify right side
    411,429.20x = 161,803,332,060.72
  5. Step 5: Solve for x
    x = 161,803,332,060.72/411,429.20
  6. Step 6: Final answer
    x = 393,271.39

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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.