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Finding the Fourth Proportional to 633,872.40, 874,738.89 and 347,391.81

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Solution

The fourth proportional to 633,872.40, 874,738.89 and 347,391.81 is: 479,397.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,872.40 : 874,738.89 = 347,391.81 : x
  2. Step 2: Convert to fraction form
    633,872.40/874,738.89 = 347,391.81/x
  3. Step 3: Cross multiply
    633,872.40x = 874,738.89 × 347,391.81
  4. Step 4: Simplify right side
    633,872.40x = 303,877,126,274.49
  5. Step 5: Solve for x
    x = 303,877,126,274.49/633,872.40
  6. Step 6: Final answer
    x = 479,397.95

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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.