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Finding the Fourth Proportional to 668,166.75, 1,001,773.98 and 312,987.02

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Solution

The fourth proportional to 668,166.75, 1,001,773.98 and 312,987.02 is: 469,257.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,166.75 : 1,001,773.98 = 312,987.02 : x
  2. Step 2: Convert to fraction form
    668,166.75/1,001,773.98 = 312,987.02/x
  3. Step 3: Cross multiply
    668,166.75x = 1,001,773.98 × 312,987.02
  4. Step 4: Simplify right side
    668,166.75x = 313,542,247,704.87
  5. Step 5: Solve for x
    x = 313,542,247,704.87/668,166.75
  6. Step 6: Final answer
    x = 469,257.48

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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.