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Finding the Fourth Proportional to 633,958.90, 874,861.44 and 347,478.10

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Solution

The fourth proportional to 633,958.90, 874,861.44 and 347,478.10 is: 479,518.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,958.90 : 874,861.44 = 347,478.10 : x
  2. Step 2: Convert to fraction form
    633,958.90/874,861.44 = 347,478.10/x
  3. Step 3: Cross multiply
    633,958.90x = 874,861.44 × 347,478.10
  4. Step 4: Simplify right side
    633,958.90x = 303,995,190,934.46
  5. Step 5: Solve for x
    x = 303,995,190,934.46/633,958.90
  6. Step 6: Final answer
    x = 479,518.77

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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.