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Finding the Fourth Proportional to 685,817.26, 946,435.43 and 379,898.32

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Solution

The fourth proportional to 685,817.26, 946,435.43 and 379,898.32 is: 524,263.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,817.26 : 946,435.43 = 379,898.32 : x
  2. Step 2: Convert to fraction form
    685,817.26/946,435.43 = 379,898.32/x
  3. Step 3: Cross multiply
    685,817.26x = 946,435.43 × 379,898.32
  4. Step 4: Simplify right side
    685,817.26x = 359,549,229,845.48
  5. Step 5: Solve for x
    x = 359,549,229,845.48/685,817.26
  6. Step 6: Final answer
    x = 524,263.90

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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.