Home / 414,132.40-620,834.10-280,579.60

Finding the Fourth Proportional to 414,132.40, 620,834.10 and 280,579.60

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Solution

The fourth proportional to 414,132.40, 620,834.10 and 280,579.60 is: 420,622.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,132.40 : 620,834.10 = 280,579.60 : x
  2. Step 2: Convert to fraction form
    414,132.40/620,834.10 = 280,579.60/x
  3. Step 3: Cross multiply
    414,132.40x = 620,834.10 × 280,579.60
  4. Step 4: Simplify right side
    414,132.40x = 174,193,383,444.36
  5. Step 5: Solve for x
    x = 174,193,383,444.36/414,132.40
  6. Step 6: Final answer
    x = 420,622.45

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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.