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Finding the Fourth Proportional to 625,652.40, 863,404.74 and 339,177

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Solution

The fourth proportional to 625,652.40, 863,404.74 and 339,177 is: 468,066.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,652.40 : 863,404.74 = 339,177 : x
  2. Step 2: Convert to fraction form
    625,652.40/863,404.74 = 339,177/x
  3. Step 3: Cross multiply
    625,652.40x = 863,404.74 × 339,177
  4. Step 4: Simplify right side
    625,652.40x = 292,847,029,498.98
  5. Step 5: Solve for x
    x = 292,847,029,498.98/625,652.40
  6. Step 6: Final answer
    x = 468,066.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.