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Finding the Fourth Proportional to 447,078.60, 669,840.30 and 367,763.40

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Solution

The fourth proportional to 447,078.60, 669,840.30 and 367,763.40 is: 551,005.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    447,078.60 : 669,840.30 = 367,763.40 : x
  2. Step 2: Convert to fraction form
    447,078.60/669,840.30 = 367,763.40/x
  3. Step 3: Cross multiply
    447,078.60x = 669,840.30 × 367,763.40
  4. Step 4: Simplify right side
    447,078.60x = 246,342,746,185.02
  5. Step 5: Solve for x
    x = 246,342,746,185.02/447,078.60
  6. Step 6: Final answer
    x = 551,005.45

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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.