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Finding the Fourth Proportional to 722,393.28, 996,910.20 and 435,858

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Solution

The fourth proportional to 722,393.28, 996,910.20 and 435,858 is: 601,488.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,393.28 : 996,910.20 = 435,858 : x
  2. Step 2: Convert to fraction form
    722,393.28/996,910.20 = 435,858/x
  3. Step 3: Cross multiply
    722,393.28x = 996,910.20 × 435,858
  4. Step 4: Simplify right side
    722,393.28x = 434,511,285,951.60
  5. Step 5: Solve for x
    x = 434,511,285,951.60/722,393.28
  6. Step 6: Final answer
    x = 601,488.55

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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.