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Finding the Fourth Proportional to 496,361.36, 744,259.56 and 338,780.72

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Solution

The fourth proportional to 496,361.36, 744,259.56 and 338,780.72 is: 507,978.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    496,361.36 : 744,259.56 = 338,780.72 : x
  2. Step 2: Convert to fraction form
    496,361.36/744,259.56 = 338,780.72/x
  3. Step 3: Cross multiply
    496,361.36x = 744,259.56 × 338,780.72
  4. Step 4: Simplify right side
    496,361.36x = 252,140,789,603.68
  5. Step 5: Solve for x
    x = 252,140,789,603.68/496,361.36
  6. Step 6: Final answer
    x = 507,978.28

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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.