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Finding the Fourth Proportional to 485,884.44, 670,279.86 and 324,790.02

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Solution

The fourth proportional to 485,884.44, 670,279.86 and 324,790.02 is: 448,049.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,884.44 : 670,279.86 = 324,790.02 : x
  2. Step 2: Convert to fraction form
    485,884.44/670,279.86 = 324,790.02/x
  3. Step 3: Cross multiply
    485,884.44x = 670,279.86 × 324,790.02
  4. Step 4: Simplify right side
    485,884.44x = 217,700,209,135.00
  5. Step 5: Solve for x
    x = 217,700,209,135.00/485,884.44
  6. Step 6: Final answer
    x = 448,049.35

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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.