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Finding the Fourth Proportional to 551,474.96, 827,920.85 and 425,195.42

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Solution

The fourth proportional to 551,474.96, 827,920.85 and 425,195.42 is: 638,339.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,474.96 : 827,920.85 = 425,195.42 : x
  2. Step 2: Convert to fraction form
    551,474.96/827,920.85 = 425,195.42/x
  3. Step 3: Cross multiply
    551,474.96x = 827,920.85 × 425,195.42
  4. Step 4: Simplify right side
    551,474.96x = 352,028,147,276.93
  5. Step 5: Solve for x
    x = 352,028,147,276.93/551,474.96
  6. Step 6: Final answer
    x = 638,339.32

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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.