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Finding the Fourth Proportional to 685,871.96, 946,493.04 and 379,947.42

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Solution

The fourth proportional to 685,871.96, 946,493.04 and 379,947.42 is: 524,321.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,871.96 : 946,493.04 = 379,947.42 : x
  2. Step 2: Convert to fraction form
    685,871.96/946,493.04 = 379,947.42/x
  3. Step 3: Cross multiply
    685,871.96x = 946,493.04 × 379,947.42
  4. Step 4: Simplify right side
    685,871.96x = 359,617,588,595.96
  5. Step 5: Solve for x
    x = 359,617,588,595.96/685,871.96
  6. Step 6: Final answer
    x = 524,321.75

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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.