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Finding the Fourth Proportional to 672,221.90, 927,689.66 and 366,323.48

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Solution

The fourth proportional to 672,221.90, 927,689.66 and 366,323.48 is: 505,539.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,221.90 : 927,689.66 = 366,323.48 : x
  2. Step 2: Convert to fraction form
    672,221.90/927,689.66 = 366,323.48/x
  3. Step 3: Cross multiply
    672,221.90x = 927,689.66 × 366,323.48
  4. Step 4: Simplify right side
    672,221.90x = 339,834,504,611.22
  5. Step 5: Solve for x
    x = 339,834,504,611.22/672,221.90
  6. Step 6: Final answer
    x = 505,539.17

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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.