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Finding the Fourth Proportional to 654,224.60, 980,335.42 and 440,199.88

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Solution

The fourth proportional to 654,224.60, 980,335.42 and 440,199.88 is: 659,625.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    654,224.60 : 980,335.42 = 440,199.88 : x
  2. Step 2: Convert to fraction form
    654,224.60/980,335.42 = 440,199.88/x
  3. Step 3: Cross multiply
    654,224.60x = 980,335.42 × 440,199.88
  4. Step 4: Simplify right side
    654,224.60x = 431,543,534,243.75
  5. Step 5: Solve for x
    x = 431,543,534,243.75/654,224.60
  6. Step 6: Final answer
    x = 659,625.97

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.