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Finding the Fourth Proportional to 633,640.48, 874,423.88 and 347,171.44

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Solution

The fourth proportional to 633,640.48, 874,423.88 and 347,171.44 is: 479,096.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,640.48 : 874,423.88 = 347,171.44 : x
  2. Step 2: Convert to fraction form
    633,640.48/874,423.88 = 347,171.44/x
  3. Step 3: Cross multiply
    633,640.48x = 874,423.88 × 347,171.44
  4. Step 4: Simplify right side
    633,640.48x = 303,574,997,589.99
  5. Step 5: Solve for x
    x = 303,574,997,589.99/633,640.48
  6. Step 6: Final answer
    x = 479,096.60

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1.5x scale

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.