Home / 664,591.13-917,124.02-378,105.07

Finding the Fourth Proportional to 664,591.13, 917,124.02 and 378,105.07

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Solution

The fourth proportional to 664,591.13, 917,124.02 and 378,105.07 is: 521,778.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,591.13 : 917,124.02 = 378,105.07 : x
  2. Step 2: Convert to fraction form
    664,591.13/917,124.02 = 378,105.07/x
  3. Step 3: Cross multiply
    664,591.13x = 917,124.02 × 378,105.07
  4. Step 4: Simplify right side
    664,591.13x = 346,769,237,195.16
  5. Step 5: Solve for x
    x = 346,769,237,195.16/664,591.13
  6. Step 6: Final answer
    x = 521,778.31

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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.