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Finding the Fourth Proportional to 625,455.90, 863,106.03 and 338,969.84

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Solution

The fourth proportional to 625,455.90, 863,106.03 and 338,969.84 is: 467,765.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,455.90 : 863,106.03 = 338,969.84 : x
  2. Step 2: Convert to fraction form
    625,455.90/863,106.03 = 338,969.84/x
  3. Step 3: Cross multiply
    625,455.90x = 863,106.03 × 338,969.84
  4. Step 4: Simplify right side
    625,455.90x = 292,566,908,576.61
  5. Step 5: Solve for x
    x = 292,566,908,576.61/625,455.90
  6. Step 6: Final answer
    x = 467,765.85

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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.