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Finding the Fourth Proportional to 633,859.12, 874,749.43 and 361,929.36

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Solution

The fourth proportional to 633,859.12, 874,749.43 and 361,929.36 is: 499,476.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,859.12 : 874,749.43 = 361,929.36 : x
  2. Step 2: Convert to fraction form
    633,859.12/874,749.43 = 361,929.36/x
  3. Step 3: Cross multiply
    633,859.12x = 874,749.43 × 361,929.36
  4. Step 4: Simplify right side
    633,859.12x = 316,597,503,057.13
  5. Step 5: Solve for x
    x = 316,597,503,057.13/633,859.12
  6. Step 6: Final answer
    x = 499,476.13

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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.