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Finding the Fourth Proportional to 551,881.20, 826,072.20 and 394,417.20

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Solution

The fourth proportional to 551,881.20, 826,072.20 and 394,417.20 is: 590,375.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,881.20 : 826,072.20 = 394,417.20 : x
  2. Step 2: Convert to fraction form
    551,881.20/826,072.20 = 394,417.20/x
  3. Step 3: Cross multiply
    551,881.20x = 826,072.20 × 394,417.20
  4. Step 4: Simplify right side
    551,881.20x = 325,817,084,121.84
  5. Step 5: Solve for x
    x = 325,817,084,121.84/551,881.20
  6. Step 6: Final answer
    x = 590,375.40

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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.