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Finding the Fourth Proportional to 603,940.50, 906,205.98 and 427,580.82

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Solution

The fourth proportional to 603,940.50, 906,205.98 and 427,580.82 is: 641,580.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,940.50 : 906,205.98 = 427,580.82 : x
  2. Step 2: Convert to fraction form
    603,940.50/906,205.98 = 427,580.82/x
  3. Step 3: Cross multiply
    603,940.50x = 906,205.98 × 427,580.82
  4. Step 4: Simplify right side
    603,940.50x = 387,476,296,017.30
  5. Step 5: Solve for x
    x = 387,476,296,017.30/603,940.50
  6. Step 6: Final answer
    x = 641,580.25

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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.