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Finding the Fourth Proportional to 668,504.58, 1,002,685.53 and 188,720.58

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Solution

The fourth proportional to 668,504.58, 1,002,685.53 and 188,720.58 is: 283,060.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,504.58 : 1,002,685.53 = 188,720.58 : x
  2. Step 2: Convert to fraction form
    668,504.58/1,002,685.53 = 188,720.58/x
  3. Step 3: Cross multiply
    668,504.58x = 1,002,685.53 × 188,720.58
  4. Step 4: Simplify right side
    668,504.58x = 189,227,394,779.21
  5. Step 5: Solve for x
    x = 189,227,394,779.21/668,504.58
  6. Step 6: Final answer
    x = 283,060.73

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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.