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Finding the Fourth Proportional to 641,644.66, 961,925.64 and 404,464.42

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Solution

The fourth proportional to 641,644.66, 961,925.64 and 404,464.42 is: 606,355.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,644.66 : 961,925.64 = 404,464.42 : x
  2. Step 2: Convert to fraction form
    641,644.66/961,925.64 = 404,464.42/x
  3. Step 3: Cross multiply
    641,644.66x = 961,925.64 × 404,464.42
  4. Step 4: Simplify right side
    641,644.66x = 389,064,696,065.73
  5. Step 5: Solve for x
    x = 389,064,696,065.73/641,644.66
  6. Step 6: Final answer
    x = 606,355.39

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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.