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Finding the Fourth Proportional to 441,395.40, 661,412.70 and 328,546.20

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Solution

The fourth proportional to 441,395.40, 661,412.70 and 328,546.20 is: 492,312.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,395.40 : 661,412.70 = 328,546.20 : x
  2. Step 2: Convert to fraction form
    441,395.40/661,412.70 = 328,546.20/x
  3. Step 3: Cross multiply
    441,395.40x = 661,412.70 × 328,546.20
  4. Step 4: Simplify right side
    441,395.40x = 217,304,629,216.74
  5. Step 5: Solve for x
    x = 217,304,629,216.74/441,395.40
  6. Step 6: Final answer
    x = 492,312.85

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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.