Home / 414,007.60-621,011.40-280,163.20

Finding the Fourth Proportional to 414,007.60, 621,011.40 and 280,163.20

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Solution

The fourth proportional to 414,007.60, 621,011.40 and 280,163.20 is: 420,244.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    414,007.60 : 621,011.40 = 280,163.20 : x
  2. Step 2: Convert to fraction form
    414,007.60/621,011.40 = 280,163.20/x
  3. Step 3: Cross multiply
    414,007.60x = 621,011.40 × 280,163.20
  4. Step 4: Simplify right side
    414,007.60x = 173,984,541,060.48
  5. Step 5: Solve for x
    x = 173,984,541,060.48/414,007.60
  6. Step 6: Final answer
    x = 420,244.80

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1.5x scale

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.