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Finding the Fourth Proportional to 888,148.80, 1,330,692.30 and 413,861.40

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Solution

The fourth proportional to 888,148.80, 1,330,692.30 and 413,861.40 is: 620,078.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,148.80 : 1,330,692.30 = 413,861.40 : x
  2. Step 2: Convert to fraction form
    888,148.80/1,330,692.30 = 413,861.40/x
  3. Step 3: Cross multiply
    888,148.80x = 1,330,692.30 × 413,861.40
  4. Step 4: Simplify right side
    888,148.80x = 550,722,178,247.22
  5. Step 5: Solve for x
    x = 550,722,178,247.22/888,148.80
  6. Step 6: Final answer
    x = 620,078.73

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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.