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Finding the Fourth Proportional to 664,059.20, 916,445.04 and 377,606

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Solution

The fourth proportional to 664,059.20, 916,445.04 and 377,606 is: 521,120.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,059.20 : 916,445.04 = 377,606 : x
  2. Step 2: Convert to fraction form
    664,059.20/916,445.04 = 377,606/x
  3. Step 3: Cross multiply
    664,059.20x = 916,445.04 × 377,606
  4. Step 4: Simplify right side
    664,059.20x = 346,055,145,774.24
  5. Step 5: Solve for x
    x = 346,055,145,774.24/664,059.20
  6. Step 6: Final answer
    x = 521,120.93

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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.