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Finding the Fourth Proportional to 404,911.40, 607,367.10 and 383,138.60

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Solution

The fourth proportional to 404,911.40, 607,367.10 and 383,138.60 is: 574,707.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,911.40 : 607,367.10 = 383,138.60 : x
  2. Step 2: Convert to fraction form
    404,911.40/607,367.10 = 383,138.60/x
  3. Step 3: Cross multiply
    404,911.40x = 607,367.10 × 383,138.60
  4. Step 4: Simplify right side
    404,911.40x = 232,705,780,380.06
  5. Step 5: Solve for x
    x = 232,705,780,380.06/404,911.40
  6. Step 6: Final answer
    x = 574,707.90

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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.