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Finding the Fourth Proportional to 556,782.60, 768,351.72 and 327,365.64

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Solution

The fourth proportional to 556,782.60, 768,351.72 and 327,365.64 is: 451,759.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    556,782.60 : 768,351.72 = 327,365.64 : x
  2. Step 2: Convert to fraction form
    556,782.60/768,351.72 = 327,365.64/x
  3. Step 3: Cross multiply
    556,782.60x = 768,351.72 × 327,365.64
  4. Step 4: Simplify right side
    556,782.60x = 251,531,952,562.90
  5. Step 5: Solve for x
    x = 251,531,952,562.90/556,782.60
  6. Step 6: Final answer
    x = 451,759.72

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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.