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Finding the Fourth Proportional to 633,662.39, 874,420.66 and 361,719.47

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Solution

The fourth proportional to 633,662.39, 874,420.66 and 361,719.47 is: 499,153.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,662.39 : 874,420.66 = 361,719.47 : x
  2. Step 2: Convert to fraction form
    633,662.39/874,420.66 = 361,719.47/x
  3. Step 3: Cross multiply
    633,662.39x = 874,420.66 × 361,719.47
  4. Step 4: Simplify right side
    633,662.39x = 316,294,977,692.25
  5. Step 5: Solve for x
    x = 316,294,977,692.25/633,662.39
  6. Step 6: Final answer
    x = 499,153.78

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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.