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Finding the Fourth Proportional to 471,711.80, 706,530.90 and 284,396.60

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Solution

The fourth proportional to 471,711.80, 706,530.90 and 284,396.60 is: 425,969.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,711.80 : 706,530.90 = 284,396.60 : x
  2. Step 2: Convert to fraction form
    471,711.80/706,530.90 = 284,396.60/x
  3. Step 3: Cross multiply
    471,711.80x = 706,530.90 × 284,396.60
  4. Step 4: Simplify right side
    471,711.80x = 200,934,985,754.94
  5. Step 5: Solve for x
    x = 200,934,985,754.94/471,711.80
  6. Step 6: Final answer
    x = 425,969.81

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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.