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Finding the Fourth Proportional to 980,407.56, 1,469,339.86 and 440,265

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Solution

The fourth proportional to 980,407.56, 1,469,339.86 and 440,265 is: 659,826.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,407.56 : 1,469,339.86 = 440,265 : x
  2. Step 2: Convert to fraction form
    980,407.56/1,469,339.86 = 440,265/x
  3. Step 3: Cross multiply
    980,407.56x = 1,469,339.86 × 440,265
  4. Step 4: Simplify right side
    980,407.56x = 646,898,913,462.90
  5. Step 5: Solve for x
    x = 646,898,913,462.90/980,407.56
  6. Step 6: Final answer
    x = 659,826.53

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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.