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Finding the Fourth Proportional to 494,421.60, 741,632.40 and 405,775.20

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Solution

The fourth proportional to 494,421.60, 741,632.40 and 405,775.20 is: 608,662.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,421.60 : 741,632.40 = 405,775.20 : x
  2. Step 2: Convert to fraction form
    494,421.60/741,632.40 = 405,775.20/x
  3. Step 3: Cross multiply
    494,421.60x = 741,632.40 × 405,775.20
  4. Step 4: Simplify right side
    494,421.60x = 300,936,035,436.48
  5. Step 5: Solve for x
    x = 300,936,035,436.48/494,421.60
  6. Step 6: Final answer
    x = 608,662.80

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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.