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Finding the Fourth Proportional to 406,498.20, 609,747.30 and 264,780.60

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Solution

The fourth proportional to 406,498.20, 609,747.30 and 264,780.60 is: 397,170.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,498.20 : 609,747.30 = 264,780.60 : x
  2. Step 2: Convert to fraction form
    406,498.20/609,747.30 = 264,780.60/x
  3. Step 3: Cross multiply
    406,498.20x = 609,747.30 × 264,780.60
  4. Step 4: Simplify right side
    406,498.20x = 161,449,255,942.38
  5. Step 5: Solve for x
    x = 161,449,255,942.38/406,498.20
  6. Step 6: Final answer
    x = 397,170.90

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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.