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Finding the Fourth Proportional to 625,716.63, 938,853.99 and 288,576

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Solution

The fourth proportional to 625,716.63, 938,853.99 and 288,576 is: 432,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,716.63 : 938,853.99 = 288,576 : x
  2. Step 2: Convert to fraction form
    625,716.63/938,853.99 = 288,576/x
  3. Step 3: Cross multiply
    625,716.63x = 938,853.99 × 288,576
  4. Step 4: Simplify right side
    625,716.63x = 270,930,729,018.24
  5. Step 5: Solve for x
    x = 270,930,729,018.24/625,716.63
  6. Step 6: Final answer
    x = 432,992.69

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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.