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Finding the Fourth Proportional to 664,063.20, 916,450.56 and 377,610

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Solution

The fourth proportional to 664,063.20, 916,450.56 and 377,610 is: 521,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,063.20 : 916,450.56 = 377,610 : x
  2. Step 2: Convert to fraction form
    664,063.20/916,450.56 = 377,610/x
  3. Step 3: Cross multiply
    664,063.20x = 916,450.56 × 377,610
  4. Step 4: Simplify right side
    664,063.20x = 346,060,895,961.60
  5. Step 5: Solve for x
    x = 346,060,895,961.60/664,063.20
  6. Step 6: Final answer
    x = 521,126.45

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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.