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Finding the Fourth Proportional to 667,975.92, 921,805.44 and 366,172.08

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Solution

The fourth proportional to 667,975.92, 921,805.44 and 366,172.08 is: 505,316.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,975.92 : 921,805.44 = 366,172.08 : x
  2. Step 2: Convert to fraction form
    667,975.92/921,805.44 = 366,172.08/x
  3. Step 3: Cross multiply
    667,975.92x = 921,805.44 × 366,172.08
  4. Step 4: Simplify right side
    667,975.92x = 337,539,415,320.12
  5. Step 5: Solve for x
    x = 337,539,415,320.12/667,975.92
  6. Step 6: Final answer
    x = 505,316.74

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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.