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Finding the Fourth Proportional to 625,021.84, 862,468.50 and 349,328.80

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Solution

The fourth proportional to 625,021.84, 862,468.50 and 349,328.80 is: 482,039.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,021.84 : 862,468.50 = 349,328.80 : x
  2. Step 2: Convert to fraction form
    625,021.84/862,468.50 = 349,328.80/x
  3. Step 3: Cross multiply
    625,021.84x = 862,468.50 × 349,328.80
  4. Step 4: Simplify right side
    625,021.84x = 301,285,086,142.80
  5. Step 5: Solve for x
    x = 301,285,086,142.80/625,021.84
  6. Step 6: Final answer
    x = 482,039.29

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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.