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Finding the Fourth Proportional to 413,080.40, 619,620.60 and 367,979.60

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Solution

The fourth proportional to 413,080.40, 619,620.60 and 367,979.60 is: 551,969.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,080.40 : 619,620.60 = 367,979.60 : x
  2. Step 2: Convert to fraction form
    413,080.40/619,620.60 = 367,979.60/x
  3. Step 3: Cross multiply
    413,080.40x = 619,620.60 × 367,979.60
  4. Step 4: Simplify right side
    413,080.40x = 228,007,740,539.76
  5. Step 5: Solve for x
    x = 228,007,740,539.76/413,080.40
  6. Step 6: Final answer
    x = 551,969.40

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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.