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Finding the Fourth Proportional to 771,076.88, 1,063,959.12 and 484,393.92

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Solution

The fourth proportional to 771,076.88, 1,063,959.12 and 484,393.92 is: 668,383.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    771,076.88 : 1,063,959.12 = 484,393.92 : x
  2. Step 2: Convert to fraction form
    771,076.88/1,063,959.12 = 484,393.92/x
  3. Step 3: Cross multiply
    771,076.88x = 1,063,959.12 × 484,393.92
  4. Step 4: Simplify right side
    771,076.88x = 515,375,328,856.55
  5. Step 5: Solve for x
    x = 515,375,328,856.55/771,076.88
  6. Step 6: Final answer
    x = 668,383.84

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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.