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Finding the Fourth Proportional to 483,208.60, 724,812.90 and 405,059.80

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Solution

The fourth proportional to 483,208.60, 724,812.90 and 405,059.80 is: 607,589.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,208.60 : 724,812.90 = 405,059.80 : x
  2. Step 2: Convert to fraction form
    483,208.60/724,812.90 = 405,059.80/x
  3. Step 3: Cross multiply
    483,208.60x = 724,812.90 × 405,059.80
  4. Step 4: Simplify right side
    483,208.60x = 293,592,568,311.42
  5. Step 5: Solve for x
    x = 293,592,568,311.42/483,208.60
  6. Step 6: Final answer
    x = 607,589.70

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Similar ratio
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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.