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Finding the Fourth Proportional to 665,118.70, 996,468.45 and 383,800.30

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Solution

The fourth proportional to 665,118.70, 996,468.45 and 383,800.30 is: 575,002.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,118.70 : 996,468.45 = 383,800.30 : x
  2. Step 2: Convert to fraction form
    665,118.70/996,468.45 = 383,800.30/x
  3. Step 3: Cross multiply
    665,118.70x = 996,468.45 × 383,800.30
  4. Step 4: Simplify right side
    665,118.70x = 382,444,890,050.54
  5. Step 5: Solve for x
    x = 382,444,890,050.54/665,118.70
  6. Step 6: Final answer
    x = 575,002.46

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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.