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Finding the Fourth Proportional to 666,954.02, 1,000,124.84 and 287,692.98

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Solution

The fourth proportional to 666,954.02, 1,000,124.84 and 287,692.98 is: 431,407.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,954.02 : 1,000,124.84 = 287,692.98 : x
  2. Step 2: Convert to fraction form
    666,954.02/1,000,124.84 = 287,692.98/x
  3. Step 3: Cross multiply
    666,954.02x = 1,000,124.84 × 287,692.98
  4. Step 4: Simplify right side
    666,954.02x = 287,728,895,591.62
  5. Step 5: Solve for x
    x = 287,728,895,591.62/666,954.02
  6. Step 6: Final answer
    x = 431,407.39

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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.