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Finding the Fourth Proportional to 625,408.94, 863,065.09 and 338,929.03

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Solution

The fourth proportional to 625,408.94, 863,065.09 and 338,929.03 is: 467,722.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,408.94 : 863,065.09 = 338,929.03 : x
  2. Step 2: Convert to fraction form
    625,408.94/863,065.09 = 338,929.03/x
  3. Step 3: Cross multiply
    625,408.94x = 863,065.09 × 338,929.03
  4. Step 4: Simplify right side
    625,408.94x = 292,517,813,780.56
  5. Step 5: Solve for x
    x = 292,517,813,780.56/625,408.94
  6. Step 6: Final answer
    x = 467,722.47

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1.5x scale

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.