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Finding the Fourth Proportional to 660,579.62, 911,544.22 and 366,237.21

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Solution

The fourth proportional to 660,579.62, 911,544.22 and 366,237.21 is: 505,376.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,579.62 : 911,544.22 = 366,237.21 : x
  2. Step 2: Convert to fraction form
    660,579.62/911,544.22 = 366,237.21/x
  3. Step 3: Cross multiply
    660,579.62x = 911,544.22 × 366,237.21
  4. Step 4: Simplify right side
    660,579.62x = 333,841,411,924.43
  5. Step 5: Solve for x
    x = 333,841,411,924.43/660,579.62
  6. Step 6: Final answer
    x = 505,376.49

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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.