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Finding the Fourth Proportional to 664,093.80, 916,445.12 and 377,613.88

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Solution

The fourth proportional to 664,093.80, 916,445.12 and 377,613.88 is: 521,104.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,093.80 : 916,445.12 = 377,613.88 : x
  2. Step 2: Convert to fraction form
    664,093.80/916,445.12 = 377,613.88/x
  3. Step 3: Cross multiply
    664,093.80x = 916,445.12 × 377,613.88
  4. Step 4: Simplify right side
    664,093.80x = 346,062,397,570.27
  5. Step 5: Solve for x
    x = 346,062,397,570.27/664,093.80
  6. Step 6: Final answer
    x = 521,104.70

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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.