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Finding the Fourth Proportional to 664,080.79, 916,427.26 and 377,600.90

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Solution

The fourth proportional to 664,080.79, 916,427.26 and 377,600.90 is: 521,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,080.79 : 916,427.26 = 377,600.90 : x
  2. Step 2: Convert to fraction form
    664,080.79/916,427.26 = 377,600.90/x
  3. Step 3: Cross multiply
    664,080.79x = 916,427.26 × 377,600.90
  4. Step 4: Simplify right side
    664,080.79x = 346,043,758,160.53
  5. Step 5: Solve for x
    x = 346,043,758,160.53/664,080.79
  6. Step 6: Final answer
    x = 521,086.84

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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.