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Finding the Fourth Proportional to 468,962.76, 647,180.64 and 287,774.82

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Solution

The fourth proportional to 468,962.76, 647,180.64 and 287,774.82 is: 397,136.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,962.76 : 647,180.64 = 287,774.82 : x
  2. Step 2: Convert to fraction form
    468,962.76/647,180.64 = 287,774.82/x
  3. Step 3: Cross multiply
    468,962.76x = 647,180.64 × 287,774.82
  4. Step 4: Simplify right side
    468,962.76x = 186,242,292,183.49
  5. Step 5: Solve for x
    x = 186,242,292,183.49/468,962.76
  6. Step 6: Final answer
    x = 397,136.63

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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.