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Finding the Fourth Proportional to 439,701.64, 660,659.63 and 279,851.09

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Solution

The fourth proportional to 439,701.64, 660,659.63 and 279,851.09 is: 420,481.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,701.64 : 660,659.63 = 279,851.09 : x
  2. Step 2: Convert to fraction form
    439,701.64/660,659.63 = 279,851.09/x
  3. Step 3: Cross multiply
    439,701.64x = 660,659.63 × 279,851.09
  4. Step 4: Simplify right side
    439,701.64x = 184,886,312,871.94
  5. Step 5: Solve for x
    x = 184,886,312,871.94/439,701.64
  6. Step 6: Final answer
    x = 420,481.29

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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.