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Finding the Fourth Proportional to 566,305.36, 781,485.64 and 321,334.72

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Solution

The fourth proportional to 566,305.36, 781,485.64 and 321,334.72 is: 443,432.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    566,305.36 : 781,485.64 = 321,334.72 : x
  2. Step 2: Convert to fraction form
    566,305.36/781,485.64 = 321,334.72/x
  3. Step 3: Cross multiply
    566,305.36x = 781,485.64 × 321,334.72
  4. Step 4: Simplify right side
    566,305.36x = 251,118,469,313.42
  5. Step 5: Solve for x
    x = 251,118,469,313.42/566,305.36
  6. Step 6: Final answer
    x = 443,432.97

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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.