Home / 664,583.13-917,112.98-378,097.07

Finding the Fourth Proportional to 664,583.13, 917,112.98 and 378,097.07

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Solution

The fourth proportional to 664,583.13, 917,112.98 and 378,097.07 is: 521,767.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,583.13 : 917,112.98 = 378,097.07 : x
  2. Step 2: Convert to fraction form
    664,583.13/917,112.98 = 378,097.07/x
  3. Step 3: Cross multiply
    664,583.13x = 917,112.98 × 378,097.07
  4. Step 4: Simplify right side
    664,583.13x = 346,757,726,956.65
  5. Step 5: Solve for x
    x = 346,757,726,956.65/664,583.13
  6. Step 6: Final answer
    x = 521,767.27

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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.