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Finding the Fourth Proportional to 633,960.10, 874,954.61 and 392,320.56

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Solution

The fourth proportional to 633,960.10, 874,954.61 and 392,320.56 is: 541,457.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,960.10 : 874,954.61 = 392,320.56 : x
  2. Step 2: Convert to fraction form
    633,960.10/874,954.61 = 392,320.56/x
  3. Step 3: Cross multiply
    633,960.10x = 874,954.61 × 392,320.56
  4. Step 4: Simplify right side
    633,960.10x = 343,262,682,569.78
  5. Step 5: Solve for x
    x = 343,262,682,569.78/633,960.10
  6. Step 6: Final answer
    x = 541,457.87

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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.