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Finding the Fourth Proportional to 442,857.40, 663,605.70 and 330,008.20

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Solution

The fourth proportional to 442,857.40, 663,605.70 and 330,008.20 is: 494,505.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,857.40 : 663,605.70 = 330,008.20 : x
  2. Step 2: Convert to fraction form
    442,857.40/663,605.70 = 330,008.20/x
  3. Step 3: Cross multiply
    442,857.40x = 663,605.70 × 330,008.20
  4. Step 4: Simplify right side
    442,857.40x = 218,995,322,566.74
  5. Step 5: Solve for x
    x = 218,995,322,566.74/442,857.40
  6. Step 6: Final answer
    x = 494,505.28

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