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Finding the Fourth Proportional to 490,086.60, 735,567.30 and 423,601.80

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Solution

The fourth proportional to 490,086.60, 735,567.30 and 423,601.80 is: 635,780.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    490,086.60 : 735,567.30 = 423,601.80 : x
  2. Step 2: Convert to fraction form
    490,086.60/735,567.30 = 423,601.80/x
  3. Step 3: Cross multiply
    490,086.60x = 735,567.30 × 423,601.80
  4. Step 4: Simplify right side
    490,086.60x = 311,587,632,301.14
  5. Step 5: Solve for x
    x = 311,587,632,301.14/490,086.60
  6. Step 6: Final answer
    x = 635,780.76

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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.