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Finding the Fourth Proportional to 644,304.60, 965,035.80 and 403,634.88

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Solution

The fourth proportional to 644,304.60, 965,035.80 and 403,634.88 is: 604,562.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,304.60 : 965,035.80 = 403,634.88 : x
  2. Step 2: Convert to fraction form
    644,304.60/965,035.80 = 403,634.88/x
  3. Step 3: Cross multiply
    644,304.60x = 965,035.80 × 403,634.88
  4. Step 4: Simplify right side
    644,304.60x = 389,522,109,328.70
  5. Step 5: Solve for x
    x = 389,522,109,328.70/644,304.60
  6. Step 6: Final answer
    x = 604,562.05

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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.