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Finding the Fourth Proportional to 666,893.10, 1,000,037.10 and 287,634.62

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Solution

The fourth proportional to 666,893.10, 1,000,037.10 and 287,634.62 is: 431,321.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,893.10 : 1,000,037.10 = 287,634.62 : x
  2. Step 2: Convert to fraction form
    666,893.10/1,000,037.10 = 287,634.62/x
  3. Step 3: Cross multiply
    666,893.10x = 1,000,037.10 × 287,634.62
  4. Step 4: Simplify right side
    666,893.10x = 287,645,291,244.40
  5. Step 5: Solve for x
    x = 287,645,291,244.40/666,893.10
  6. Step 6: Final answer
    x = 431,321.44

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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.