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Finding the Fourth Proportional to 579,866.52, 869,450.28 and 259,960.51

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Solution

The fourth proportional to 579,866.52, 869,450.28 and 259,960.51 is: 389,784.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,866.52 : 869,450.28 = 259,960.51 : x
  2. Step 2: Convert to fraction form
    579,866.52/869,450.28 = 259,960.51/x
  3. Step 3: Cross multiply
    579,866.52x = 869,450.28 × 259,960.51
  4. Step 4: Simplify right side
    579,866.52x = 226,022,741,496.87
  5. Step 5: Solve for x
    x = 226,022,741,496.87/579,866.52
  6. Step 6: Final answer
    x = 389,784.09

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Double scale
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Similar ratio
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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.