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Finding the Fourth Proportional to 635,813.88, 878,199.39 and 475,380.42

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Solution

The fourth proportional to 635,813.88, 878,199.39 and 475,380.42 is: 656,605.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,813.88 : 878,199.39 = 475,380.42 : x
  2. Step 2: Convert to fraction form
    635,813.88/878,199.39 = 475,380.42/x
  3. Step 3: Cross multiply
    635,813.88x = 878,199.39 × 475,380.42
  4. Step 4: Simplify right side
    635,813.88x = 417,478,794,861.94
  5. Step 5: Solve for x
    x = 417,478,794,861.94/635,813.88
  6. Step 6: Final answer
    x = 656,605.35

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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.