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Finding the Fourth Proportional to 640,525.42, 960,182.25 and 285,343.66

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Solution

The fourth proportional to 640,525.42, 960,182.25 and 285,343.66 is: 427,745.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,525.42 : 960,182.25 = 285,343.66 : x
  2. Step 2: Convert to fraction form
    640,525.42/960,182.25 = 285,343.66/x
  3. Step 3: Cross multiply
    640,525.42x = 960,182.25 × 285,343.66
  4. Step 4: Simplify right side
    640,525.42x = 273,981,917,482.04
  5. Step 5: Solve for x
    x = 273,981,917,482.04/640,525.42
  6. Step 6: Final answer
    x = 427,745.58

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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.