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Finding the Fourth Proportional to 441,037.80, 661,556.70 and 427,915.80

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Solution

The fourth proportional to 441,037.80, 661,556.70 and 427,915.80 is: 641,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,037.80 : 661,556.70 = 427,915.80 : x
  2. Step 2: Convert to fraction form
    441,037.80/661,556.70 = 427,915.80/x
  3. Step 3: Cross multiply
    441,037.80x = 661,556.70 × 427,915.80
  4. Step 4: Simplify right side
    441,037.80x = 283,090,564,525.86
  5. Step 5: Solve for x
    x = 283,090,564,525.86/441,037.80
  6. Step 6: Final answer
    x = 641,873.70

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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.