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Finding the Fourth Proportional to 386,054.40, 579,081.60 and 323,846.40

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Solution

The fourth proportional to 386,054.40, 579,081.60 and 323,846.40 is: 485,769.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,054.40 : 579,081.60 = 323,846.40 : x
  2. Step 2: Convert to fraction form
    386,054.40/579,081.60 = 323,846.40/x
  3. Step 3: Cross multiply
    386,054.40x = 579,081.60 × 323,846.40
  4. Step 4: Simplify right side
    386,054.40x = 187,533,491,466.24
  5. Step 5: Solve for x
    x = 187,533,491,466.24/386,054.40
  6. Step 6: Final answer
    x = 485,769.60

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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.