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Finding the Fourth Proportional to 633,662.48, 874,420.80 and 361,719.56

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Solution

The fourth proportional to 633,662.48, 874,420.80 and 361,719.56 is: 499,153.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,662.48 : 874,420.80 = 361,719.56 : x
  2. Step 2: Convert to fraction form
    633,662.48/874,420.80 = 361,719.56/x
  3. Step 3: Cross multiply
    633,662.48x = 874,420.80 × 361,719.56
  4. Step 4: Simplify right side
    633,662.48x = 316,295,107,030.85
  5. Step 5: Solve for x
    x = 316,295,107,030.85/633,662.48
  6. Step 6: Final answer
    x = 499,153.91

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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.