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Finding the Fourth Proportional to 576,722.88, 863,380.89 and 425,961.90

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Solution

The fourth proportional to 576,722.88, 863,380.89 and 425,961.90 is: 637,684.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,722.88 : 863,380.89 = 425,961.90 : x
  2. Step 2: Convert to fraction form
    576,722.88/863,380.89 = 425,961.90/x
  3. Step 3: Cross multiply
    576,722.88x = 863,380.89 × 425,961.90
  4. Step 4: Simplify right side
    576,722.88x = 367,767,364,328.09
  5. Step 5: Solve for x
    x = 367,767,364,328.09/576,722.88
  6. Step 6: Final answer
    x = 637,684.71

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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.