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Finding the Fourth Proportional to 547,818.60, 821,727.90 and 367,415.40

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Solution

The fourth proportional to 547,818.60, 821,727.90 and 367,415.40 is: 551,123.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,818.60 : 821,727.90 = 367,415.40 : x
  2. Step 2: Convert to fraction form
    547,818.60/821,727.90 = 367,415.40/x
  3. Step 3: Cross multiply
    547,818.60x = 821,727.90 × 367,415.40
  4. Step 4: Simplify right side
    547,818.60x = 301,915,485,069.66
  5. Step 5: Solve for x
    x = 301,915,485,069.66/547,818.60
  6. Step 6: Final answer
    x = 551,123.10

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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.