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Finding the Fourth Proportional to 406,449.54, 609,507.45 and 122,040.72

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Solution

The fourth proportional to 406,449.54, 609,507.45 and 122,040.72 is: 183,010.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,449.54 : 609,507.45 = 122,040.72 : x
  2. Step 2: Convert to fraction form
    406,449.54/609,507.45 = 122,040.72/x
  3. Step 3: Cross multiply
    406,449.54x = 609,507.45 × 122,040.72
  4. Step 4: Simplify right side
    406,449.54x = 74,384,728,043.36
  5. Step 5: Solve for x
    x = 74,384,728,043.36/406,449.54
  6. Step 6: Final answer
    x = 183,010.98

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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.