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Finding the Fourth Proportional to 419,970.40, 629,955.60 and 367,482.40

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Solution

The fourth proportional to 419,970.40, 629,955.60 and 367,482.40 is: 551,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,970.40 : 629,955.60 = 367,482.40 : x
  2. Step 2: Convert to fraction form
    419,970.40/629,955.60 = 367,482.40/x
  3. Step 3: Cross multiply
    419,970.40x = 629,955.60 × 367,482.40
  4. Step 4: Simplify right side
    419,970.40x = 231,497,595,781.44
  5. Step 5: Solve for x
    x = 231,497,595,781.44/419,970.40
  6. Step 6: Final answer
    x = 551,223.60

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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.