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Finding the Fourth Proportional to 625,447.63, 863,118.48 and 338,967.64

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Solution

The fourth proportional to 625,447.63, 863,118.48 and 338,967.64 is: 467,775.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,447.63 : 863,118.48 = 338,967.64 : x
  2. Step 2: Convert to fraction form
    625,447.63/863,118.48 = 338,967.64/x
  3. Step 3: Cross multiply
    625,447.63x = 863,118.48 × 338,967.64
  4. Step 4: Simplify right side
    625,447.63x = 292,569,234,205.99
  5. Step 5: Solve for x
    x = 292,569,234,205.99/625,447.63
  6. Step 6: Final answer
    x = 467,775.75

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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.