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Finding the Fourth Proportional to 551,957.20, 826,186.20 and 394,493.20

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Solution

The fourth proportional to 551,957.20, 826,186.20 and 394,493.20 is: 590,489.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,957.20 : 826,186.20 = 394,493.20 : x
  2. Step 2: Convert to fraction form
    551,957.20/826,186.20 = 394,493.20/x
  3. Step 3: Cross multiply
    551,957.20x = 826,186.20 × 394,493.20
  4. Step 4: Simplify right side
    551,957.20x = 325,924,837,833.84
  5. Step 5: Solve for x
    x = 325,924,837,833.84/551,957.20
  6. Step 6: Final answer
    x = 590,489.33

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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.