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Finding the Fourth Proportional to 626,582.50, 864,661.48 and 354,644.56

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Solution

The fourth proportional to 626,582.50, 864,661.48 and 354,644.56 is: 489,396.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,582.50 : 864,661.48 = 354,644.56 : x
  2. Step 2: Convert to fraction form
    626,582.50/864,661.48 = 354,644.56/x
  3. Step 3: Cross multiply
    626,582.50x = 864,661.48 × 354,644.56
  4. Step 4: Simplify right side
    626,582.50x = 306,647,488,139.00
  5. Step 5: Solve for x
    x = 306,647,488,139.00/626,582.50
  6. Step 6: Final answer
    x = 489,396.83

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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.