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Finding the Fourth Proportional to 664,311.20, 996,466.80 and 606,250.40

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Solution

The fourth proportional to 664,311.20, 996,466.80 and 606,250.40 is: 909,375.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,311.20 : 996,466.80 = 606,250.40 : x
  2. Step 2: Convert to fraction form
    664,311.20/996,466.80 = 606,250.40/x
  3. Step 3: Cross multiply
    664,311.20x = 996,466.80 × 606,250.40
  4. Step 4: Simplify right side
    664,311.20x = 604,108,396,086.72
  5. Step 5: Solve for x
    x = 604,108,396,086.72/664,311.20
  6. Step 6: Final answer
    x = 909,375.60

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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.