Home / 513,824.82-769,739.79-378,643.50

Finding the Fourth Proportional to 513,824.82, 769,739.79 and 378,643.50

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Solution

The fourth proportional to 513,824.82, 769,739.79 and 378,643.50 is: 567,230.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,824.82 : 769,739.79 = 378,643.50 : x
  2. Step 2: Convert to fraction form
    513,824.82/769,739.79 = 378,643.50/x
  3. Step 3: Cross multiply
    513,824.82x = 769,739.79 × 378,643.50
  4. Step 4: Simplify right side
    513,824.82x = 291,456,968,174.87
  5. Step 5: Solve for x
    x = 291,456,968,174.87/513,824.82
  6. Step 6: Final answer
    x = 567,230.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.