Home / 664,977.35-917,674.61-378,515.88

Finding the Fourth Proportional to 664,977.35, 917,674.61 and 378,515.88

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Solution

The fourth proportional to 664,977.35, 917,674.61 and 378,515.88 is: 522,355.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,977.35 : 917,674.61 = 378,515.88 : x
  2. Step 2: Convert to fraction form
    664,977.35/917,674.61 = 378,515.88/x
  3. Step 3: Cross multiply
    664,977.35x = 917,674.61 × 378,515.88
  4. Step 4: Simplify right side
    664,977.35x = 347,354,410,665.23
  5. Step 5: Solve for x
    x = 347,354,410,665.23/664,977.35
  6. Step 6: Final answer
    x = 522,355.25

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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.