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Finding the Fourth Proportional to 685,288.84, 946,125.48 and 440,372.38

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Solution

The fourth proportional to 685,288.84, 946,125.48 and 440,372.38 is: 607,988.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,288.84 : 946,125.48 = 440,372.38 : x
  2. Step 2: Convert to fraction form
    685,288.84/946,125.48 = 440,372.38/x
  3. Step 3: Cross multiply
    685,288.84x = 946,125.48 × 440,372.38
  4. Step 4: Simplify right side
    685,288.84x = 416,647,529,406.24
  5. Step 5: Solve for x
    x = 416,647,529,406.24/685,288.84
  6. Step 6: Final answer
    x = 607,988.20

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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.