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Finding the Fourth Proportional to 496,351.20, 743,648.40 and 479,906.40

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Solution

The fourth proportional to 496,351.20, 743,648.40 and 479,906.40 is: 719,010.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,351.20 : 743,648.40 = 479,906.40 : x
  2. Step 2: Convert to fraction form
    496,351.20/743,648.40 = 479,906.40/x
  3. Step 3: Cross multiply
    496,351.20x = 743,648.40 × 479,906.40
  4. Step 4: Simplify right side
    496,351.20x = 356,881,626,509.76
  5. Step 5: Solve for x
    x = 356,881,626,509.76/496,351.20
  6. Step 6: Final answer
    x = 719,010.30

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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.