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Finding the Fourth Proportional to 625,736.64, 938,884 and 288,596

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Solution

The fourth proportional to 625,736.64, 938,884 and 288,596 is: 433,022.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,736.64 : 938,884 = 288,596 : x
  2. Step 2: Convert to fraction form
    625,736.64/938,884 = 288,596/x
  3. Step 3: Cross multiply
    625,736.64x = 938,884 × 288,596
  4. Step 4: Simplify right side
    625,736.64x = 270,958,166,864
  5. Step 5: Solve for x
    x = 270,958,166,864/625,736.64
  6. Step 6: Final answer
    x = 433,022.70

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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.