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Finding the Fourth Proportional to 565,902.78, 780,550.40 and 384,299.44

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Solution

The fourth proportional to 565,902.78, 780,550.40 and 384,299.44 is: 530,064.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    565,902.78 : 780,550.40 = 384,299.44 : x
  2. Step 2: Convert to fraction form
    565,902.78/780,550.40 = 384,299.44/x
  3. Step 3: Cross multiply
    565,902.78x = 780,550.40 × 384,299.44
  4. Step 4: Simplify right side
    565,902.78x = 299,965,081,611.78
  5. Step 5: Solve for x
    x = 299,965,081,611.78/565,902.78
  6. Step 6: Final answer
    x = 530,064.69

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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.